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या भविष्यवाणी की गयी 		किसने विलगित (Isolate) किया (widely known)टिप्पणी
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15 फॉस्फोरस1669 हेनिंग ब्राण्ड1669H. Brandमूत्र से बनाया गया। रासायनिक रूप से खोजा गया पहला तत्त्व[1]
27 कोबाल्ट1735 जॉर्ज ब्राण्ट1735G. BrandtProved that the blue color of glass is due to a new kind of metal and not bismuth as thought previously.[2]
78 Platinum1735 A. de UlloaFirst description of a metal found in South American gold was in 1557 by Julius Caesar Scaliger. Ulloa published his findings in 1748, but Sir Charles Wood also investigated the metal in 1741. First reference to it as a new metal was made by William Brownrigg in 1750.[3]
28 Nickel1751 F. Cronstedt1751F. CronstedtFound by attempting to extract copper from the mineral known as fake copper (now known as niccolite).[4]
83 Bismuth1753 C.F. GeoffroyDefinitively identified by Claude François Geoffroy in 1753.[5]
12 Magnesium1755 J. Black1808 H. DavyBlack observed that magnesia alba (MgO) was not quicklime (CaO). Davy isolated the metal electrochemically from magnesia.[6]
1 Hydrogen1766 H. Cavendishca. 1500 ParacelsusCavendish was the first to distinguish H2 from other gases, although Paracelsus around 1500, Robert Boyle, and Joseph Priestley had observed its production by reacting strong acids with metals. Lavoisier named it in 1783.[7][8]
8 Oxygen1771 W. Scheele1604 SendivogiusObtained it by heating mercuric oxide and nitrates in 1771, but did not publish his findings until 1777. Joseph Priestley also prepared this new air by 1774, but only Lavoisier recognized it as a true element; he named it in 1777.[9][10] Before him, Sendivogius had produced oxygen by heating saltpetre, correctly identifying it as the "food of life".[11]
7 Nitrogen1772 D. Rutherford1772D. RutherfordHe discovered nitrogen while he was studying at the University of Edinburgh.[12] He showed that the air in which animals had breathed, even after removal of the exhaled carbon dioxide, was no longer able to burn a candle. Carl Wilhelm Scheele, Henry Cavendish, and Joseph Priestley also studied the element at about the same time, and Lavoisier named it in 1775-6.[13]
56 Barium1772 W. Scheele1808 H. DavyScheele distinguished a new earth (BaO) in pyrolusite and Davy isolated the metal by electrolysis.[14]
17 Chlorine1774 W. Scheele1774W. ScheeleObtained it from hydrochloric acid, but thought it was an oxide. Only in 1808 did Humphry Davy recognize it as an element.[15]
25 Manganese1774 W. Scheele1774 G. GahnDistinguished pyrolusite as the calx of a new metal. Ignatius Gottfred Kaim also discovered the new metal in 1770, as did Scheele in 1774. It was isolated by reduction of manganese dioxide with carbon.[16]
42 Molybdenum1778 W. Scheele1781 J. HjelmScheele recognised the metal as a constituent of molybdena.[17]
74 Tungsten1781 W. Scheele1783 J. and F. ElhuyarScheele obtained from scheelite an oxide of a new element. The Elhuyars obtained tungstic acid from wolframite and reduced it with charcoal.[18]
52 Tellurium1782 F.-J.M. von ReichensteinH. KlaprothMuller observed it as an impurity in gold ores from Transylvania.[19]
38 Strontium1787 W. Cruikshank1808 H. DavyCruikshank and Adair Crawford in 1790 concluded that strontianite contained a new earth. It was eventually isolated electrochemically in 1808 by Humphry Davy.[20]
1789 A. LavoisierThe first modern list of chemical elements – containing 33 elements including light, heat, unextracted "radicals" and some oxides.[21] He also redefined the term "element". Until then, no metals except mercury were considered elements.
40 Zirconium1789 H. Klaproth1824 J. BerzeliusKlaproth identified a new element in zirconia.[22][23]
92 Uranium1789 H. Klaproth1841 E.-M. PéligotKlaproth mistakenly identified a uranium oxide obtained from pitchblende as the element itself and named it after the recently discovered planet Uranus.[24][25]
22 Titanium1791 W. Gregor1825 J. BerzeliusGregor found an oxide of a new metal in ilmenite; Martin Heinrich Klaproth independently discovered the element in rutile in 1795 and named it. The pure metallic form was only obtained in 1910 by Matthew A. Hunter.[26][27]
39 Yttrium1794 J. Gadolin1843 H. RoseDiscovered in gadolinite, but Mosander showed later that its ore, yttria, contained more elements.[28][29] Wöhler mistakenly thought he had isolated the metal in 1828 from a volatile chloride he supposed to be yttrium chloride,[30][31] but Rose proved otherwise in 1843 and correctly isolated the element himself that year.
24 Chromium1794 N. Vauquelin1797 N. VauquelinVauquelin discovered the trioxide in crocoite ore, and later isolated the metal by heating the oxide in a charcoal oven.[32][33]
4 Beryllium1798 N. Vauquelin1828 F. Wöhler and A. BussyVauquelin discovered the oxide in beryl and emerald, and Klaproth suggested the present name around 1808.[34]
23 Vanadium1801 M. del Río1830 N.G.SefströmRío found the metal in vanadinite but retracted the claim after Hippolyte Victor Collet-Descotils disputed it. Sefström isolated and named it, and later it was shown that Río had been right in the first place.[35]
41 Niobium1801 C. Hatchett1864 W. BlomstrandHatchett found the element in columbite ore and named it columbium. Heinrich Rose proved in 1844 that the element is distinct from tantalum, and renamed it niobium which was officially accepted in 1949.[36]
73 Tantalum1802 G. EkebergEkeberg found another element in minerals similar to columbite and in 1844, Heinrich Rose proved that it was distinct from niobium.[37]
46 Palladium1802 W. H. Wollaston1802W. H. WollastonWollaston discovered it in samples of platinum from South America, but did not publish his results immediately. He had intended to name it after the newly discovered asteroid, Ceres, but by the time he published his results in 1804, cerium had taken that name. Wollaston named it after the more recently discovered asteroid Pallas.[38]
58 Cerium1803 H. Klaproth, J. Berzelius, and W. Hisinger1838 G. MosanderBerzelius and Hisinger discovered the element in ceria and named it after the newly discovered asteroid (then considered a planet), Ceres. Klaproth discovered it simultaneously and independently in some tantalum samples. Mosander proved later that the samples of all three researchers had at least another element in them, lanthanum.[39]
76 Osmium1803 S. Tennant1803S. TennantTennant had been working on samples of South American platinum in parallel with Wollaston and discovered two new elements, which he named osmium and iridium.[40]
77 Iridium1803 S. Tennant1803S. TennantTennant had been working on samples of South American platinum in parallel with Wollaston and discovered two new elements, which he named osmium and iridium, and published the iridium results in 1804.[41]
45 Rhodium1804 H. Wollaston1804H. WollastonWollaston discovered and isolated it from crude platinum samples from South America.[42]
19 Potassium1807 H. Davy1807H. DavyDavy discovered it by using electrolysis on potash.[43]
11 Sodium1807 H. Davy1807H. DavyAndreas Sigismund Marggraf recognised the difference between soda ash and potash in 1758. Davy discovered sodium a few days after potassium, by using electrolysis on sodium hydroxide.[44]
20 Calcium1808 H. Davy1808H. DavyDavy discovered the metal by electrolysis of quicklime.[44]
5 Boron1808 L. Gay-Lussac and L.J. Thénard1808 H. DavyRadical boracique appears on the list of elements in Lavoisier's Traité Élémentaire de Chimie from 1789.[21] On June 21, 1808, Lussac and Thénard announced a new element in sedative salt, Davy announced the isolation of a new substance from boracic acid on June 30.[45]
9 Fluorine1810 A.-M. Ampère1886H. MoissanRadical fluorique appears on the list of elements in Lavoisier's Traité Élémentaire de Chimie from 1789, but radical muriatique also appears instead of chlorine.[21] André-Marie Ampère predicted an element analogous to chlorine obtainable from hydrofluoric acid, and between 1812 and 1886 many researchers tried to obtain this element. It was eventually isolated by Moissan.[46]
53 Iodine1811 B. Courtois1811B. CourtoisCourtois discovered it in the ashes of seaweed.[47]
3 Lithium1817 A. Arfwedson1821 W. T. BrandeArfwedson discovered the alkali in petalite.[48]
48 Cadmium1817 S. L Hermann, F. Stromeyer, and J.C.H. Roloff 1817S. L Hermann, F. Stromeyer, and J.C.H. RoloffAll three found an unknown metal in a sample of zinc oxide from Silesia, but the name that Stromeyer gave became the accepted one.[49]
34 Selenium1817 J. Berzelius and G. Gahn1817J. Berzelius and G. GahnWhile working with lead they discovered a substance that they thought was tellurium, but realized after more investigation that it is different.[50]
14 Silicon1823 J. Berzelius1823J. BerzeliusHumphry Davy thought in 1800 that silica was a compound, not an element, and in 1808 suggested the present name. In 1811 Louis-Joseph Gay-Lussac and Louis-Jacques Thénard probably prepared impure silicon,[51] but Berzelius is credited with the discovery for obtaining the pure element in 1823.[52]
13 Aluminium1825 H.C.Ørsted1825H.C.ØrstedAntoine Lavoisier predicted in 1787 that alumina is the oxide of an undiscovered element, and in 1808 Humphry Davy tried to decompose it. Although he failed, he suggested the present name. Hans Christian Ørsted was the first to isolate metallic aluminium in 1825.[53]
35 Bromine1825 J. Balard and C. Löwig1825J. Balard and C. LöwigThey both discovered the element in the autumn of 1825. Balard published his results the next year,[54] but Löwig did not publish until 1827.[55]
90 Thorium1829 J. Berzelius1914 D. Lely, Jr. and L. Hamburger Berzelius obtained the oxide of a new earth in thorite.[56]
57 Lanthanum1838 G. Mosander1841 G. MosanderMosander found a new element in samples of ceria and published his results in 1842, but later he showed that this lanthana contained four more elements.[57]
68 Erbium1843 G. Mosander1879 T. CleveMosander managed to split the old yttria into yttria proper and erbia, and later terbia too.[58]
65 Terbium1843 G. Mosander1886 J.C.G. de MarignacMosander managed to split the old yttria into yttria proper and erbia, and later terbia too.[59]
44 Ruthenium1844 K. Claus1844 K. ClausGottfried Wilhelm Osann thought that he found three new metals in Russian platinum samples, and in 1844 Karl Karlovich Klaus confirmed that there was a new element.[60]
55 Caesium1860 R. Bunsen and R. Kirchhoff1882 C. SetterbergBunsen and Kirchhoff were the first to suggest finding new elements by spectrum analysis. They discovered caesium by its two blue emission lines in a sample of Dürkheim mineral water.[61] The pure metal was eventually isolated in 1882 by Setterberg.[62]
37 Rubidium1861 R. Bunsen and G. R. KirchhoffHevesy Bunsen and Kirchhoff discovered it just a few months after caesium, by observing new spectral lines in the mineral lepidolite. Bunsen never obtained a pure sample of the metal, which was later obtained by Hevesy.[63]
81 Thallium1861 W. Crookes1862 C.-A. LamyShortly after the discovery of rubidium, Crookes found a new green line in a selenium sample; later that year, Lamy found the element to be metallic.[64]
49 Indium1863 F. Reich and T. Richter1867 T. Richter Reich and Richter First identified it in sphalerite by its bright indigo-blue spectroscopic emission line. Richter isolated the metal several years later.[65]
2 Helium1868 P. Janssen and N. Lockyer1895 W. Ramsay, T. Cleve, and N. LangletJanssen and Lockyer observed independently a yellow line in the solar spectrum that did not match any other element.

Years later, Ramsay, Cleve, and Langlet observed independently the element trapped in cleveite about the same time.[66]

1869 D. I. MendeleevMendeleev arranges the 64 elements known at that time into the first modern periodic table and correctly predicts several others.
31 Gallium1875 P. E. L. de BoisbaudranP. E. L. de BoisbaudranBoisbaudran observed on a pyrenea blende sample some emission lines corresponding to the eka-aluminium that was predicted by Mendeleev in 1871 and subsequently isolated the element by electrolysis.[67][68]
70 Ytterbium1878 J.C.G. de Marignac1906 C. A. von WelsbachOn October 22, 1878, Marignac reported splitting terbia into two new earths, terbia proper and ytterbia.[69]
67 Holmium1878 J.-L. Soret1879 T. CleveSoret found it in samarskite and later, Per Teodor Cleve split Marignac's erbia into erbia proper and two new elements, thulium and holmium.[70]
69 Thulium1879 T. Cleve 1879T. CleveCleve split Marignac's erbia into erbia proper and two new elements, thulium and holmium.[71]
21 Scandium1879 F. Nilson1879F. NilsonNilson split Marignac's ytterbia into pure ytterbia and a new element that matched Mendeleev's 1871 predicted eka-boron.[72]
62 Samarium1879 P.E.L. de Boisbaudran 1879P.E.L. de BoisbaudranBoisbaudran noted a new earth in samarskite and named it samaria after the mineral.[73]
64 Gadolinium1880 J. C. G. de Marignac 1886 P.E.L. de BoisbaudranMarignac initially observed the new earth in terbia, and later Boisbaudran obtained a pure sample from samarskite.[74]
59 Praseodymium1885 C. A. von WelsbachCarl Auer von Welsbach discovered two new distinct elements in Mosander's didymia: praseodymium and neodymium.[75]
60 Neodymium1885 C. A. von WelsbachCarl Auer von Welsbach discovered two new distinct elements in Mosander's didymia: praseodymium and neodymium.[76]
32 Germanium1886 C. A. WinklerIn February 1886 Winkler found in argyrodite the eka-silicon that Mendeleev had predicted in 1871.[77]
66 Dysprosium1886 P.E.L. de Boisbaudran De Boisbaudran found a new earth in erbia.[78]
18 Argon1894 Lord Rayleigh and W. Ramsay1894Lord Rayleigh and W. RamsayThey discovered the gas by comparing the molecular weights of nitrogen prepared by liquefaction from air and nitrogen prepared by chemical means. It is the first noble gas to be isolated.[79]
63 Europium1896 E.-A. Demarçay1901 E.-A. DemarçayDemarçay found spectral lines of a new element in Lecoq's samarium, and separated this element several years later.[80]
36 Krypton1898 W. Ramsay and W. Travers1898 W. Ramsay and W. TraversOn May 30, 1898, Ramsay separated a noble gas from liquid argon by difference in boiling point.[81]
10 Neon1898 W. Ramsay and W. Travers 1898 W. Ramsay and W. TraversIn June 1898 Ramsay separated a new noble gas from liquid argon by difference in boiling point.[81]
54 Xenon1898 W. Ramsay and W. Travers 1898 W. Ramsay and W. TraversOn July 12, 1898 Ramsay separated a third noble gas within three weeks, from liquid argon by difference in boiling point.[82]
84 Polonium1898 P. and M. Curie1902 W. MarckwaldIn an experiment done on July 13, 1898, the Curies noted an increased radioactivity in the uranium obtained from pitchblende, which they ascribed to an unknown element.[83]
88 Radium1898 P. and M. Curie1902 M. Curie The Curies reported on December 26, 1898, a new element different from polonium, which Marie later isolated from uraninite.[84]
86 Radon1899 E. Rutherford and R. B. Owens1910 W. Ramsay and R. Whytlaw-GrayRutherford and Owens discovered a radioactive gas resulting from the radioactive decay of thorium, isolated later by Ramsay and Gray. In 1900, Friedrich Ernst Dorn discovered a longer-lived isotope of the same gas from the radioactive decay of radium. Since "radon" was first used to specifically designate Dorn's isotope before it became the name for the element, he is often mistakenly given credit for the latter instead of the former.[85][86]
89 Actinium1902 F. O. Giesel1902F. O. GieselGiesel obtained from pitchblende a substance that had properties similar to those of lanthanum and named it emanium.[87] André-Louis Debierne had previously reported the discovery of a new element actinium that was supposedly similar to titanium and thorium; the elements were mistakenly identified as being identical and Debierne's name was chosen, even though in retrospect Debierne's substance could not have included much actual element 89.[88]
71 Lutetium1906 C. A. von Welsbach and G. Urbain1906C. A. von Welsbachvon Welsbach proved that the old ytterbium also contained a new element, which he named cassiopeium. Urbain also proved this simultaneously, but his samples were very impure and only contained trace quantities of the new element. Despite this, his chosen name lutetium was adopted.[89]
75 Rhenium1908 M. Ogawa1919M. OgawaOgawa found it in thorianite but assigned it as element 43 instead of 75 and named it nipponium.[90] In 1925 Walter Noddack, Ida Eva Tacke and Otto Berg announced its separation from gadolinite and gave it the present name.[91]
91 Protactinium1913 O. H. Göhring and K. Fajans1927 A. von GrosseThe two obtained the first isotope of this element that had been predicted by Mendeleev in 1871 as a member of the natural decay of 238U.[92] Originally isolated in 1900 by William Crookes, who nevertheless did not recognize that it was a new element.[93]
72 Hafnium1922 D. Coster and G. von Hevesy1922 D. Coster and G. von Hevesy Georges Urbain claimed to have found the element in rare-earth residues, while Vladimir Vernadsky independently found it in orthite. Neither claim was confirmed due to World War I, and neither could be confirmed later, as the chemistry they reported does not match that now known for hafnium. After the war, Coster and Hevesy found it by X-ray spectroscopic analysis in Norwegian zircon.[94] Hafnium was the last stable element to be discovered.[95]
43 Technetium1937 C. Perrier and E. Segrè1937C. Perrier & E.SegrèThe two discovered a new element in a molybdenum sample that was used in a cyclotron, the first synthetic element to be discovered, though it was later found out that it does occur naturally in minuscule trace quantities. It had been predicted by Mendeleev in 1871 as eka-manganese.[96][97][98]
87 Francium1939 M. PereyPerey discovered it as a decay product of 227Ac.[99] Francium was the last element to be discovered in nature, rather than synthesized in the lab, although four of the "synthetic" elements that were discovered later (plutonium, neptunium, astatine, and promethium) were eventually found in trace amounts in nature as well.[100]
93 Neptunium1940 E.M. McMillan and H. AbelsonObtained by irradiating uranium with neutrons, it is the first transuranium element discovered.[101]
85 Astatine1940 R. Corson, R. MacKenzie and E. SegrèObtained by bombarding bismuth with alpha particles.[102] Later determined to occur naturally in minuscule quantities (<25 grams in earth's crust).[103]
94 Plutonium1940–1941 Glenn T. Seaborg, Arthur C. Wahl, W. Kennedy and E.M. McMillan Prepared by bombardment of uranium with deuterons.[104]
61 Promethium1942 S. Wu, E.G. Segrè and H. Bethe1945 Charles D. Coryell, Jacob A. Marinsky, Lawrence E. Glendenin, and Harold G. RichterIt was probably first prepared in 1942 by bombarding neodymium and praseodymium with neutrons, but separation of the element could not be carried out. Isolation was performed under the Manhattan Project in 1945.[105]
96 Curium1944 G. T. Seaborg, R. A. James and A. Ghiorso Prepared by bombarding plutonium with alpha particles during the Manhattan Project[106]
95 Americium1944 G. T. Seaborg, R. A. James, O. Morgan and A. GhiorsoPrepared by irradiating plutonium with neutrons during the Manhattan Project.[107]
97 Berkelium1949 G. Thompson, A. Ghiorso and G. T. Seaborg (University of California, Berkeley)Created by bombardment of americium with alpha particles.[108]
98 Californium1950 S. G. Thompson, K. Street, Jr., A. Ghiorso and G. T. Seaborg (University of California, Berkeley)Bombardment of curium with alpha particles.[109]
99 Einsteinium1952 A. Ghiorso et al. (Argonne Laboratory, Los Alamos Laboratory and University of California, Berkeley)1952 Formed in the first thermonuclear explosion in November 1952, by irradiation of uranium with neutrons; kept secret for several years.[110]
100 Fermium1952 A. Ghiorso et al. (Argonne Laboratory, Los Alamos Laboratory and University of California, Berkeley)Formed in the first thermonuclear explosion in November 1952, by irradiation of uranium with neutrons; kept secret for several years.[111]
101 Mendelevium1955 A. Ghiorso, G. Harvey, R. Choppin, S. G. Thompson and G. T. Seaborg (Berkeley Radiation Laboratory)Prepared by bombardment of einsteinium with helium.[112]
103 Lawrencium1961 A. Ghiorso, T. Sikkeland, E. Larsh and M. Latimer (Berkeley Radiation Laboratory)First prepared by bombardment of californium with boron atoms.[113]
102 Nobelium1966 E. D. Donets, V. A. Shchegolev and V. A. Ermakov (JINR in Dubna)First prepared by bombardment of uranium with neon atoms[114]
104 Rutherfordium1969 A. Ghiorso et al. (Berkeley Radiation Laboratory) and I. Zvara et al. (JINR in Dubna) Prepared by bombardment of californium with carbon atoms by Ghiorso's team and by bombardment of plutonium with neon atoms by Zvara's team.[115]
105 Dubnium1970 A. Ghiorso et al. (Berkeley Radiation Laboratory) and V. A. Druin et al. (JINR in Dubna) Prepared by bombardment of californium with nitrogen atoms by Ghiorso's team and by bombardment of americium with neon atoms by Druin's team.[116]
106 Seaborgium1974 A. Ghiorso et al. (Berkeley Radiation Laboratory)Prepared by bombardment of californium with oxygen atoms.[117]
107 Bohrium1981 G.Münzenberg et al. (GSI in Darmstadt)Obtained by bombarding bismuth with chromium.[118]
109 Meitnerium1982 G. Münzenberg, P. Armbruster et al. (GSI in Darmstadt)Prepared by bombardment of bismuth with iron atoms.[119]
108 Hassium1984 G. Münzenberg, P. Armbruster et al. (GSI in Darmstadt)Prepared by bombardment of lead with iron atoms[120]
110 Darmstadtium1994 S. Hofmann et al. (GSI in Darmstadt)Prepared by bombardment of lead with nickel[121]
111 Roentgenium1994 S. Hofmann et al. (GSI in Darmstadt)Prepared by bombardment of bismuth with nickel[122]
112 Copernicium1996 S. Hofmann et al. (GSI in Darmstadt)Prepared by bombardment of lead with zinc.[123][124]
114 Flerovium1999 Y. Oganessian et al. (JINR in Dubna)Prepared by bombardment of plutonium with calcium[125]
116 Livermorium2000 Y. Oganessian et al. (JINR in Dubna)Prepared by bombardment of curium with calcium[126]
118 Oganesson2002 Y. Oganessian et al. (JINR in Dubna)Prepared by bombardment of californium with calcium[127]
115 Moscovium2003 Y. Oganessian et al. (JINR in Dubna)Prepared by bombardment of americium with calcium[128]
113 Nihonium2003–2004 Y. Oganessian et al. (JINR in Dubna) and K. Morita et al. (RIKEN in Wako, Japan)Prepared by decay of moscovium by Oganessian's team and bombardment of bismuth with zinc by Morita's team[129]
117 Tennessine2009 Y. Oganessian et al. (JINR in Dubna)Prepared by bombardment of berkelium with calcium[130]
  1. ↑ "15 Phosphorus". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  2. ↑ "27 Cobalt". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  3. ↑ "78 Platinum". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  4. ↑ "28 Nickel". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  5. ↑ "Bismuth". Los Alamos National Laboratory. मूल से 14 फ़रवरी 2013 को पुरालेखित. अभिगमन तिथि 3 March 2013.
  6. ↑ "12 Magnesium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  7. ↑ "01 Hydrogen". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  8. ↑ Andrews, A. C. (1968). "Oxygen". प्रकाशित Clifford A. Hampel (संपा॰). The Encyclopedia of the Chemical Elements. New York: Reinhold Book Corporation. पपृ॰ 272. LCCN 68-29938.
  9. ↑ "08 Oxygen". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  10. ↑ Cook, Gerhard A.; Lauer, Carol M. (1968). "Oxygen". प्रकाशित Clifford A. Hampel (संपा॰). The Encyclopedia of the Chemical Elements. New York: Reinhold Book Corporation. पपृ॰ 499–500. LCCN 68-29938.
  11. ↑ Stasińska, Grażyna (2012). "The discovery of oxygen in the universe" (PDF). ppgfsc.posgrad.ufsc.br. मूल (PDF) से 24 अप्रैल 2015 को पुरालेखित. अभिगमन तिथि 20 April 2018.
  12. ↑ Roza, Greg (2010). The Nitrogen Elements: Nitrogen, Phosphorus, Arsenic, Antimony, Bismuth. पपृ॰ 7. आई॰ऍस॰बी॰ऍन॰ 9781435853355.
  13. ↑ "07 Nitrogen". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  14. ↑ "56 Barium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  15. ↑ "17 Chlorine". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  16. ↑ "25 Manganese". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  17. ↑ "42 Molybdenum". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  18. ↑ IUPAC. "74 Tungsten". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  19. ↑ "52 Tellurium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  20. ↑ "38 Strontium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  21. ↑ अ आ इ "Lavoisier 1789 - 33 elements". Elementymology & Elements Multidict. मूल से 11 जनवरी 2019 को पुरालेखित. अभिगमन तिथि 2015-01-24.
  22. ↑ "Chronology – Elementymology". Elements.vanderkrogt.net. मूल से 30 जुलाई 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  23. ↑ Lide, David R., संपा॰ (2007–2008). "CRC Handbook of Chemistry and Physics". 4. New York: CRC Press: 42. 978-0-8493-0488-0. Cite journal requires |journal= (मदद); |contribution= ignored (मदद)
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  25. ↑ E.-M. Péligot (1842). "Recherches Sur L'Uranium". Annales de chimie et de physique. 5 (5): 5–47. मूल से 22 अगस्त 2010 को पुरालेखित. अभिगमन तिथि 12 दिसंबर 2018.
  26. ↑ "Titanium". Los Alamos National Laboratory. 2004. मूल से 2006-12-30 को पुरालेखित. अभिगमन तिथि 2006-12-29.
  27. ↑ Barksdale, Jelks (1968). The Encyclopedia of the Chemical Elements. Skokie, Illinois: Reinhold Book Corporation. पपृ॰ 732–38 "Titanium". LCCCN 68-29938.
  28. ↑ Browning, Philip Embury (1917). "Introduction to the Rarer Elements". Kongl. Vet. Acad. Handl. XV: 137.
  29. ↑ Gadolin, Johan (1796). "Von einer schwarzen, schweren Steinart aus Ytterby Steinbruch in Roslagen in Schweden". Crell's Annalen. I: 313–329.
  30. ↑ Heiserman, David L. (1992). "Element 39: Yttrium". Exploring Chemical Elements and their Compounds. New York: TAB Books. पपृ॰ 150–152. आई॰ऍस॰बी॰ऍन॰ 0-8306-3018-X.
  31. ↑ Wöhler, Friedrich (1828). "Ueber das Beryllium und Yttrium". Annalen der Physik. 89 (8): 577–582. डीओआइ:10.1002/andp.18280890805. बिबकोड:1828AnP....89..577W.
  32. ↑ Vauquelin, Louis Nicolas (1798). "Memoir on a New Metallic Acid which exists in the Red Lead of Sibiria". Journal of Natural Philosophy, Chemistry, and the Arts. 3: 146.
  33. ↑ Glenn, William (1896). "Chrome in the Southern Appalachian Region". Transactions of the American Institute of Mining, Metallurgical and Petroleum Engineers. 25: 482.
  34. ↑ "04 Beryllium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  35. ↑ "23 Vanadium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  36. ↑ "41 Niobium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  37. ↑ "73 Tantalum". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  38. ↑ "46 Palladium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  39. ↑ "58 Cerium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  40. ↑ "76 Osmium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  41. ↑ "77 Iridium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  42. ↑ "45 Rhodium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  43. ↑ "19 Potassium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  44. ↑ अ आ "11 Sodium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  45. ↑ "05 Boron". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  46. ↑ "09 Fluorine". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  47. ↑ "53 Iodine". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  48. ↑ "03 Lithium". Elements.vanderkrogt.net. मूल से 16 जून 2011 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  49. ↑ "48 Cadmium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  50. ↑ "34 Selenium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  51. ↑ "14 Silicon". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  52. ↑ "Silicon". The Environmental Literacy Council. मूल से 8 सितंबर 2018 को पुरालेखित. अभिगमन तिथि 2016-12-02.
  53. ↑ "13 Aluminium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  54. ↑ "35 Bromine". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  55. ↑ Carl Löwig (1827) "Über Brombereitung und eine auffallende Zersetzung des Aethers durch Chlor" Archived 2014-07-08 at the वेबैक मशीन (On the preparation of bromine and a striking decomposition of ether by chlorine), Magazine für Pharmacie, vol. 21, pages 31-36.
  56. ↑ "90 Thorium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  57. ↑ "57 Lanthanum". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  58. ↑ "Erbium". RSC.org. मूल से 25 मार्च 2019 को पुरालेखित. अभिगमन तिथि 2016-12-02.
  59. ↑ "Terbium". RSC.org. मूल से 1 जनवरी 2019 को पुरालेखित. अभिगमन तिथि 2016-12-02.
  60. ↑ "44 Ruthenium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  61. ↑ "55 Caesium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  62. ↑ Caesium Archived 2012-03-09 at the वेबैक मशीन
  63. ↑ "37 Rubidium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  64. ↑ "81 Thallium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  65. ↑ "49 Indium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  66. ↑ "02 Helium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  67. ↑ "31 Gallium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  68. ↑ "The New Metal Gallium". Scientific American. June 15, 1878. मूल से 23 सितंबर 2016 को पुरालेखित. अभिगमन तिथि 2016-06-16.
  69. ↑ "70 Ytterbium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  70. ↑ "67 Holmium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  71. ↑ "69 Thulium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  72. ↑ "21 Scandium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  73. ↑ "62 Samarium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  74. ↑ "64 Gadolinium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  75. ↑ "59 Praseodymium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  76. ↑ "60 Neodymium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  77. ↑ "32 Germanium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  78. ↑ "66 Dysprosium". Elements.vanderkrogt.net. मूल से 17 फ़रवरी 2019 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  79. ↑ "18 Argon". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  80. ↑ "63 Europium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  81. ↑ अ आ "10 Neon". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  82. ↑ "54 Xenon". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  83. ↑ "84 Polonium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  84. ↑ "88 Radium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  85. ↑ Partington, J. R. (May 1957). "Discovery of Radon". Nature. 179 (4566): 912. डीओआइ:10.1038/179912a0. बिबकोड:1957Natur.179..912P.
  86. ↑ Ramsay, W.; Gray, R. W. (1910). "La densité de l'emanation du radium". Comptes rendus hebdomadaires des séances de l'Académie des sciences. 151: 126–128. मूल से 12 जनवरी 2012 को पुरालेखित. अभिगमन तिथि 12 दिसंबर 2018.
  87. ↑ "89 Actinium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  88. ↑ Kirby, Harold W. (1971). "The Discovery of Actinium". Isis. 62 (3): 290–308. JSTOR 229943. डीओआइ:10.1086/350760.
  89. ↑ "71 Lutetium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  90. ↑ "Archived copy" (PDF). मूल (PDF) से 2008-10-03 को पुरालेखित. अभिगमन तिथि 2008-07-11.सीएस1 रखरखाव: Archived copy as title (link)
  91. ↑ "75 Rhenium". Elements.vanderkrogt.net. मूल से 17 फ़रवरी 2019 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  92. ↑ "91 Protactinium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  93. ↑ Emsley, John (2001). Nature's Building Blocks ((Hardcover, First Edition) संस्करण). ऑक्सफोर्ड यूनिवर्सिटी प्रेस. पृ॰ 347. आई॰ऍस॰बी॰ऍन॰ 0-19-850340-7.
  94. ↑ "72 Hafnium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  95. ↑ Noddack, W.; Tacke, I.; Berg, O (1925). "Die Ekamangane". Naturwissenschaften. 13 (26): 567. डीओआइ:10.1007/BF01558746. बिबकोड:1925NW.....13..567.
  96. ↑ "43 Technetium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  97. ↑ History of the Origin of the Chemical Elements and Their Discoverers, Individual Element Names and History, "Technetium"
  98. ↑ "Chemical Elements Discovered at Lawrence Berkeley National Lab". Lawrence Berkeley National Laboratory. मूल से 6 नवंबर 2018 को पुरालेखित. अभिगमन तिथि 2017-03-02.
  99. ↑ "87 Francium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  100. ↑ Adloff, Jean-Pierre; Kaufman, George B. (2005-09-25). Francium (Atomic Number 87), the Last Discovered Natural Element Archived जून 4, 2013 at the वेबैक मशीन. The Chemical Educator 10 (5). [2007-03-26]
  101. ↑ "93 Neptunium". Elements.vanderkrogt.net. मूल से 11 मई 2012 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  102. ↑ "85 Astatine". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  103. ↑ Close, Frank E. (2004). Particle Physics: A Very Short Introduction. Oxford University Press. पृ॰ 2. आई॰ऍस॰बी॰ऍन॰ 978-0-19-280434-1. मूल से 30 मई 2013 को पुरालेखित. अभिगमन तिथि 12 दिसंबर 2018.
  104. ↑ "94 Plutonium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  105. ↑ "61 Promethium". Elements.vanderkrogt.net. मूल से 17 फ़रवरी 2019 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  106. ↑ "96 Curium". Elements.vanderkrogt.net. मूल से 18 अप्रैल 2019 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  107. ↑ "95 Americium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  108. ↑ "97 Berkelium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  109. ↑ "98 Californium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  110. ↑ "99 Einsteinium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  111. ↑ "100 Fermium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  112. ↑ "101 Mendelevium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  113. ↑ "103 Lawrencium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  114. ↑ "102 Nobelium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  115. ↑ "104 Rutherfordium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  116. ↑ "105 Dubnium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  117. ↑ "106 Seaborgium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  118. ↑ "107 Bohrium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  119. ↑ "109 Meitnerium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  120. ↑ "108 Hassium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  121. ↑ "110 Darmstadtium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  122. ↑ "111 Roentgenium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2008-09-12.
  123. ↑ "112 Copernicium". Elements.vanderkrogt.net. मूल से 23 जनवरी 2010 को पुरालेखित. अभिगमन तिथि 2009-07-17.
  124. ↑ "Discovery of the Element with Atomic Number 112". www.iupac.org. 2009-06-26. मूल से 2009-12-21 को पुरालेखित. अभिगमन तिथि 2009-07-17.
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