Periodic Table of The Elements

Table Javascript

The four classical elements are not listed, at least not as such. The rest should all be there. For now.

Dimitri Mendelejev

The repeating nature of the characteristics of the chemical elements inspired Dimitri Ivanowitch Mendelejev in 1869 to a table of periods when there were 63 known elements. Similar attempts were drawn up by J.W. Döbereiner in 1829 and Lothar Meyer in 1868, all long before Niels Bohr developed the atomic theory behind the logical arrangement of the elements.

Periodic Table

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¹ Lanthanides:

² Actinides:

Legend
	Alkali metals
	Alkaline earth metals
	Lanthanoids
	Actinoids
	Transition metals
	Other metals
	Metalloids
	Other non-metals
	Halogens
	Noble gases
	Unknown

Current element
Name:		Category:
Symbol:		Atomic number:
Melting point:		Atomic weight:
Boiling point:
Discoverer:

Move your mouse over the table to display various properties of the element currently under the pointer. Click an element to keep the display static until the next click.
Temperatures are shown in either degrees Celsius or Kelvin.

A list

Symbol	Name	Nr.	Atomic weight	Category	Melting point	Boiling point	Discoverer	Year
H	Hydrogen	1	1.00794	nonmetal	-259.14	-252.87	H. Cavendish	1766
He	Helium	2	4.0026	noble gas	-272.2	-268.93	P. Janssen	1868
Li	Lithium	3	6.941	alkali	180.54	1342	J.A. Arfvedson	1817
Be	Beryllium	4	9.01218	alkaline	1287	2469	L.N. Vauquelin	1798
B	Boron	5	10.81	metalloid	2076	3927	J.L. Gay-Lussac & L.J. Thénard; H. Davy	1808
C	Carbon	6	12.011	nonmetal	3500	4827	Prehistoric	-3750
N	Nitrogen	7	14.0067	nonmetal	-209.9	-195.8	D. Rutherford	1772
O	Oxygen	8	15.9994	nonmetal	-218.4	-183.0	C.W. Scheele	1771
F	Flourine	9	18.998403	halogen	-219.62	-188.14	H. Moissan	1886
Ne	Neon	10	20.17	noble gas	-248.6	-246.1	W. Ramsay & M.W. Travers	1898
Na	Sodium	11	22.990	alkali	97.8	882.9	H. Davy	1807
Mg	Magnesium	12	24.305	alkaline	638.8	1090	J. Black	1755
Al	Aluminum	13	26.98154	poor metal	660.37	2467	H.C. Ørsted	1825
Si	Silicon	14	28.0855	metalloid	1410	2355	J.J. Berzelius	1824
P	Phosphorous	15	30.97376	nonmetal	44.1	280	Hennig Brand	1669
S	Sulfur	16	32.06	nonmetal	112.8	444.6	Prehistoric	-2000
Cl	Chlorine	17	35.453	halogen	-100.98	-34.6	C.W. Scheele	1774
Ar	Argon	18	39.948	noble gas	-189.3	-186	Lord Rayleigh & W. Ramsay	1894
K	Potassium	19	39.098	alkali	63.65	774	H. Davy	1807
Ca	Calcium	20	40.08	alkaline	839	1484.4	H. Davy	1808
Sc	Scandium	21	44.9559	transition	1539	2832	Nilson	1879
Ti	Titanium	22	47.90	transition	1660	3287	W. Gregor	1791
V	Vanadium	23	50.9415	transition	1910	3407	Del Rio	1901
Cr	Chromium	24	51.996	transition	1857	2672	L.N. Vauquelin	1797
Mn	Manganese	25	54.9380	transition	1245	1962	J.G. Gahn, C.W. Scheele & T.O. Bergman	1774
Fe	Iron	26	55.847	transition	1535	2750	Prehistoric	-5000
Co	Cobalt	27	58.9332	transition	1495	2870	Georg Brandt	1732
Ni	Nickel	28	58.71	transition	1453	2732	A.F. Cronstedt	1751
Cu	Copper	29	63.546	transition	1803	2567	Prehistoric	-9000
Zn	Zinc	30	65.38	transition	419.58	907	Prehistoric	-1000
Ga	Gallium	31	69.735	poor metal	29.78	2403	P.E.L. de Boisbaudran	1875
Ge	Germanium	32	72.59	metalloid	937.4	2830	Winkler	1886
As	Arsenic	33	74.9216	metalloid	817	614	Albertus Magnus	1250
Se	Selenium	34	78.96	nonmetal	217	684.9	J.J. Berzelius	1817
Br	Bromine	35	79.904	halogen	-7.2	58.78	A.J. Balard & L. Gmelin	1826
Kr	Krypton	36	83.80	noble gas	-157.2	-153.4	W. Ramsay & M.W. Travers	1898
Rb	Rubidium	37	85.468	alkali	38.89	688	Bunsen & Kirchoff	1861
Sr	Strontium	38	87.62	alkaline	769	1384	H. Davy	1808
Y	Yttrium	39	88.9059	transition	1523	3337	J. Gadolin	1794
Zr	Zirconium	40	91.22	transition	1855	4409	M.H. Klaproth	1789
Nb	Niobium	41	92.9064	transition	2477	4744	C. Hatchett	1801
Mo	Molybdenum	42	95.94	transition	2617	4612	C.W. Scheele	1778
Tc	Technetium	43	98.9062	transition	2200?50	4877	C. Perrier & E. Segrè	1937
Ru	Ruthenium	44	101.07	transition	2250	3900	K. K. Klaus	1844
Rh	Rhodium	45	102.9055	transition	1966?3	3727	W.H. Wollaston	1803
Pd	Palladium	46	106.4	transition	1552	2927	W.H. Wollaston	1803
Ag	Silver	47	107.868	transition	961.93	2212	Prehistoric	-5000
Cd	Cadmium	48	112.41	transition	320.9	765	K.S.L. Hermann, F. Stromeyer, J.C.H. Roloff	1817
In	Indium	49	114.82	poor metal	156.60	2072	Riech & Richter	1863
Sn	Tin	50	118.69	poor metal	231.9	2270	Prehistoric	-3500
Sb	Antimony	51	121.75	metalloid	630	1750	Jabir ibn Hayyan	800
Te	Tellurium	52	127.60	metalloid	449.5	989.8	F.-J.M. von Reichenstein	1782
I	Iodine	53	126.9045	halogen	113.7	184.3	B. Courtois	1811
Xe	Xenon	54	131.30	noble gas	-111.9	-108.1	W. Ramsay & M.W. Travers	1898
Cs	Caesium	55	132.905	alkali	28.5	678.4	Bunsen & Kirchoff	1863
Ba	Barium	56	137.33	alkaline	725	1140	H. Davy	1808
La	Lanthanum	57	138.9055	lanthanoid	920	3469	C.G. Mosander	1839
Ce	Cerium	58	140.12	lanthanoid	795	3257	J.J. Berzelius & W. Hisinger; M.H. Klaproth	1803
Pr	Praseodymium	59	140.9077	lanthanoid	935	3127	C.A. von Welsbach	1885
Nd	Neodymium	60	144.24	lanthanoid	1010	3127	C.A. von Welsbach	1885
Pm	Promethium	61	(145)	lanthanoid	1100	3000	Marinsky et al.	1945
Sm	Samarium	62	150.4	lanthanoid	1072	1900	P.E.L. de Boisbaudran	1879
Eu	Europium	63	151.96	lanthanoid	822	1597	E. Demarcay	1896
Gd	Gadolinium	64	157.25	lanthanoid	1311	3233	J.C.G. de Marignac	1880
Tb	Terbium	65	158.9254	lanthanoid	1360	3041	C.G. Mosander	1843
Dy	Dysprosium	66	162.50	lanthanoid	1412	2562	P.E.L. de Boisbaudran	1886
Ho	Holmium	67	164.9304	lanthanoid	1470	2720	M. Delafontaine	1878
Er	Erbium	68	167.26	lanthanoid	1522	2510	C.G. Mosander	1843
Tm	Thulium	69	168.9342	lanthanoid	1545	1727	P.T. Cleve	1879
Yb	Ytterbium	70	173.04	lanthanoid	824	1466	J.C.G. de Marignac	1878
Lu	Lutetium	71	174.96	lanthanoid	1656	3315	G. Urbain & C.A. von Welsbach	1907
Hf	Hafnium	72	178.49	transition	2150	5400	Coster & Von Hevesy	1923
Ta	Tantalum	73	180.947	transition	3017	5458	A.G. Ekeberg	1801
W	Tungsten	74	183.85	transition	3422	5555	J. & F. d'Elhuyar	1783
Re	Rhenium	75	186.207	transition	3180	5627	Noddack, Berg & Tacke	1925
Os	Osmium	76	190.2	transition	3045	5027	S. Tennant	1803
Ir	Iridium	77	192.22	transition	2446	4428	S. Tennant	1803
Pt	Platinum	78	195.09	transition	1772	3827	Antonio de Ulloa	1735
Au	Gold	79	196.9665	transition	1064.18	2856	Prehistoric	-7000
Hg	Mercury	80	200.59	transition	-38.87	356.58	Prehistoric	-2000
Tl	Thallium	81	204.37	poor metal	304	1473	W. Crookes	1861
Pb	Lead	82	207.2	poor metal	327.5	1740	Prehistoric	-7000
Bi	Bismuth	83	208.9804	poor metal	271.5	1564	C.F. Geoffroy	1753
Po	Polonium	84	(209)	metalloid	254	962	P. & M. Curie	1898
At	Astatine	85	(210)	halogen	302	337	D.R. Corson, K.R. Mackenzie, E. Segrè	1940
Rn	Radon	86	(222)	noble gas	-71	-61.8	F.E. Dorn	1900
Fr	Francium	87	(223)	alkali	27	677	M. Perey	1938
Ra	Radium	88	226.0254	alkaline	700	1737	P. & M. Curie	1898
Ac	Actinium	89	(227)	actinoid	1050	3300	A.-L. Debierne	1899
Th	Thorium	90	232.0381	actinoid	1750	4790	J.J. Berzelius	1828
Pa	Proactinium	91	231.0359	actinoid	1600	?	Hahn & Meitner	1917
U	Uranium	92	238.029	actinoid	1132	3818	E.-M. Péligot	1841
Np	Neptunium	93	237.0482	actinoid	640	3902	McMillan & Abelson	1940
Pu	Plutonium	94	(244)	actinoid	639.5	3230	Seaborg et al.	1940
Am	Americium	95	(243)	actinoid	994	2607	Seaborg et al.	1944
Cm	Curium	96	(247)	actinoid	1340	3110	Seaborg et al.	1944
Bk	Berkelium	97	(247)	actinoid	986	?	Seaborg et al.	1949
Cf	Californium	98	(251)	actinoid	900	?	Seaborg et al.	1950
Es	Einsteinium	99	(254)	actinoid	860	?	A. Ghiorso et al.	1952
Fm	Fremium	100	(257)	actinoid	?	?	A. Ghiorso et al.	1953
Md	Mendelevium	101	(258)	actinoid	827	?	A. Ghiorso et al.	1955
No	Nobelium	102	(259)	actinoid	827	?	A. Ghiorso et al.	1957
Lr	Lawrencium	103	(260)	actinoid	1627	?	A. Ghiorso et al.	1961
Rf	Rutherfordium	104	(261)	transition	?	?	Berkeley Lab & Dubna Lab	1964
Db	Dubnium	105	(262)	transition	?	?	Berkeley Lab & Dubna Lab	1967
Sg	Seaborgium	106	(263)	transition	?	?	J.J. Berzelius & W. Hisinger; M.H. Klaproth	1803
Bh	Bohrium	107	(262)	transition	?	?	G. Münzenberg et al. GSI	1981
Hs	Hassium	108	(265)	transition	?	?	G. Münzenberg et al. GSI	1984
Mt	Meitnerium	109	(266)	transition	?	?	G. Münzenberg et al. GSI	1982
Ds	Darmstadtium	110	(281)	transition	?	?	S. Hofmann et al. GSI	1994
Rg	Roentgenium	111	(280)	transition	?	?	S. Hofmann et al. GSI	1994
Cp	Copernicium	112	(277)	transition	?	?	S. Hofmann et al. GSI	1996
Uut	Ununtrium	113	(284)	poor metal	?	?	Dubna Lab & Lawrence Lab	2003
Uuq	Ununquadium	114	(289)	noble gas	?	?	Dubna Lab & Lawrence Lab	1998
Uup	Ununpentium	115	(288)	poor metal	?	?	Dubna Lab & Lawrence Lab	2003
Uuh	Ununhexium	116	(293)	poor metal	?	?	Dubna Lab	2000
Uus	Ununseptium	117	(?)	unknown	?	?	(not discovered yet)
Uuo	Ununoctium	118	(294)	unknown	?	?	Dubna Lab & Lawrence Lab	2002