Records — reference/periodic-table

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via reference-data/1.0Jun 12, 2026ulv2:a47f047beadd…ark:12345/ulbb1d11ff79hsm3.v1.0.0

id	name	symbol	atomicNumber	categoryId	period	block	atomicMass	boilingPointC	density	discoverer	discoveryYear	electronConfiguration	electronegativity	group	meltingPointC	phase
1	Hydrogen	H	1	reactive-nonmetal	1	s	1.008	-252.87	0.00008988	—	1766	1s1	2.2	1	-259.34	Gas
10	Neon	Ne	10	noble-gas	2	p	20.18	-246.08	0.0008999	—	1898	[He]2s2 2p6	—	18	-248.59	Gas
100	Fermium	Fm	100	actinide	7	f	257.09511	—	—	—	1952	[Rn] 5f12 7s2	1.3	—	1526.85	Solid
101	Mendelevium	Md	101	actinide	7	f	258.09843	—	—	—	1955	[Rn]7s2 5f13	1.3	—	826.85	Solid
102	Nobelium	No	102	actinide	7	f	259.101	—	—	—	1957	[Rn]7s2 5f14	1.3	—	826.85	Solid
103	Lawrencium	Lr	103	actinide	7	f	266.12	—	—	—	1961	[Rn]7s2 5f14 6d1	1.3	—	1626.85	Solid
104	Rutherfordium	Rf	104	transition-metal	7	d	267.122	—	—	—	1964	[Rn]7s2 5f14 6d2	—	4	—	Solid
105	Dubnium	Db	105	transition-metal	7	d	268.126	—	—	—	1967	[Rn]7s2 5f14 6d3	—	5	—	Solid
106	Seaborgium	Sg	106	transition-metal	7	d	269.128	—	—	—	1974	[Rn]7s2 5f14 6d4	—	6	—	Solid
107	Bohrium	Bh	107	transition-metal	7	d	270.133	—	—	—	1976	[Rn]7s2 5f14 6d5	—	7	—	Solid
108	Hassium	Hs	108	transition-metal	7	d	269.1336	—	—	—	1984	[Rn]7s2 5f14 6d6	—	8	—	Solid
109	Meitnerium	Mt	109	transition-metal	7	d	277.154	—	—	—	1982	[Rn]7s2 5f14 6d7 (calculated)	—	9	—	Solid
11	Sodium	Na	11	alkali-metal	3	s	22.9897693	882.85	0.97	—	1807	[Ne]3s1	0.93	1	97.8	Solid
110	Darmstadtium	Ds	110	transition-metal	7	d	282.166	—	—	—	1994	[Rn]7s2 5f14 6d8 (predicted)	—	10	—	Expected to be a Solid
111	Roentgenium	Rg	111	transition-metal	7	d	282.169	—	—	—	1994	[Rn]7s2 5f14 6d9 (predicted)	—	11	—	Expected to be a Solid
112	Copernicium	Cn	112	transition-metal	7	d	286.179	—	—	—	1996	[Rn]7s2 5f14 6d10 (predicted)	—	12	—	Expected to be a Solid
113	Nihonium	Nh	113	post-transition-metal	7	p	286.182	—	—	—	2004	[Rn]5f14 6d10 7s2 7p1 (predicted)	—	13	—	Expected to be a Solid
114	Flerovium	Fl	114	post-transition-metal	7	p	290.192	—	—	—	1998	[Rn]7s2 7p2 5f14 6d10 (predicted)	—	14	—	Expected to be a Solid
115	Moscovium	Mc	115	post-transition-metal	7	p	290.196	—	—	—	2003	[Rn]7s2 7p3 5f14 6d10 (predicted)	—	15	—	Expected to be a Solid
116	Livermorium	Lv	116	post-transition-metal	7	p	293.205	—	—	—	2000	[Rn]7s2 7p4 5f14 6d10 (predicted)	—	16	—	Expected to be a Solid
117	Tennessine	Ts	117	halogen	7	p	294.211	—	—	—	2010	[Rn]7s2 7p5 5f14 6d10 (predicted)	—	17	—	Expected to be a Solid
118	Oganesson	Og	118	noble-gas	7	p	295.216	—	—	—	2006	[Rn]7s2 7p6 5f14 6d10 (predicted)	—	18	—	Expected to be a Gas
12	Magnesium	Mg	12	alkaline-earth-metal	3	s	24.305	1089.85	1.74	—	1808	[Ne]3s2	1.31	2	649.85	Solid
13	Aluminum	Al	13	post-transition-metal	3	p	26.981538	2518.85	2.7	—	Ancient	[Ne]3s2 3p1	1.61	13	660.29	Solid
14	Silicon	Si	14	metalloid	3	p	28.085	3264.85	2.3296	—	1854	[Ne]3s2 3p2	1.9	14	1413.85	Solid
15	Phosphorus	P	15	reactive-nonmetal	3	p	30.973762	280.5	1.82	—	1669	[Ne]3s2 3p3	2.19	15	44.15	Solid
16	Sulfur	S	16	reactive-nonmetal	3	p	32.07	444.6	2.067	—	Ancient	[Ne]3s2 3p4	2.58	16	115.21	Solid
17	Chlorine	Cl	17	halogen	3	p	35.45	-34.04	0.003214	—	1774	[Ne]3s2 3p5	3.16	17	-101.5	Gas
18	Argon	Ar	18	noble-gas	3	p	39.9	-185.85	0.0017837	—	1894	[Ne]3s2 3p6	—	18	-189.35	Gas
19	Potassium	K	19	alkali-metal	4	s	39.0983	758.85	0.89	—	1807	[Ar]4s1	0.82	1	63.38	Solid
2	Helium	He	2	noble-gas	1	s	4.0026	-268.93	0.0001785	—	1868	1s2	—	18	-272.2	Gas
20	Calcium	Ca	20	alkaline-earth-metal	4	s	40.08	1483.85	1.54	—	Ancient	[Ar]4s2	1	2	841.85	Solid
21	Scandium	Sc	21	transition-metal	4	d	44.95591	2835.85	2.99	—	1879	[Ar]4s2 3d1	1.36	3	1540.85	Solid
22	Titanium	Ti	22	transition-metal	4	d	47.867	3286.85	4.5	—	1791	[Ar]4s2 3d2	1.54	4	1667.85	Solid
23	Vanadium	V	23	transition-metal	4	d	50.9415	3406.85	6	—	1801	[Ar]4s2 3d3	1.63	5	1909.85	Solid
24	Chromium	Cr	24	transition-metal	4	d	51.996	2670.85	7.15	—	1797	[Ar]3d5 4s1	1.66	6	1906.85	Solid
25	Manganese	Mn	25	transition-metal	4	d	54.93804	2060.85	7.3	—	1774	[Ar]4s2 3d5	1.55	7	1245.85	Solid
26	Iron	Fe	26	transition-metal	4	d	55.84	2860.85	7.874	—	Ancient	[Ar]4s2 3d6	1.83	8	1537.85	Solid
27	Cobalt	Co	27	transition-metal	4	d	58.93319	2926.85	8.86	—	1735	[Ar]4s2 3d7	1.88	9	1494.85	Solid
28	Nickel	Ni	28	transition-metal	4	d	58.693	2912.85	8.912	—	1751	[Ar]4s2 3d8	1.91	10	1454.85	Solid
29	Copper	Cu	29	transition-metal	4	d	63.55	2561.85	8.933	—	Ancient	[Ar]4s1 3d10	1.9	11	1084.62	Solid
3	Lithium	Li	3	alkali-metal	2	s	7	1341.85	0.534	—	1817	[He]2s1	0.98	1	180.5	Solid
30	Zinc	Zn	30	transition-metal	4	d	65.4	906.85	7.134	—	1746	[Ar]4s2 3d10	1.65	12	419.53	Solid
31	Gallium	Ga	31	post-transition-metal	4	p	69.723	2203.85	5.91	—	1875	[Ar]4s2 3d10 4p1	1.81	13	29.76	Solid
32	Germanium	Ge	32	metalloid	4	p	72.63	2832.85	5.323	—	1886	[Ar]4s2 3d10 4p2	2.01	14	938.25	Solid
33	Arsenic	As	33	metalloid	4	p	74.92159	613.85	5.776	—	Ancient	[Ar]4s2 3d10 4p3	2.18	15	816.85	Solid
34	Selenium	Se	34	reactive-nonmetal	4	p	78.97	684.85	4.809	—	1817	[Ar]4s2 3d10 4p4	2.55	16	220.5	Solid
35	Bromine	Br	35	halogen	4	p	79.9	58.8	3.11	—	1826	[Ar]4s2 3d10 4p5	2.96	17	-7.2	Liquid
36	Krypton	Kr	36	noble-gas	4	p	83.8	-153.22	0.003733	—	1898	[Ar]4s2 3d10 4p6	3	18	-157.36	Gas
37	Rubidium	Rb	37	alkali-metal	5	s	85.468	687.85	1.53	—	1861	[Kr]5s1	0.82	1	39.31	Solid
38	Strontium	Sr	38	alkaline-earth-metal	5	s	87.62	1381.85	2.64	—	1790	[Kr]5s2	0.95	2	776.85	Solid
39	Yttrium	Y	39	transition-metal	5	d	88.90584	3344.85	4.47	—	1794	[Kr]5s2 4d1	1.22	3	1521.85	Solid
4	Beryllium	Be	4	alkaline-earth-metal	2	s	9.012183	2470.85	1.85	—	1798	[He]2s2	1.57	2	1286.85	Solid
40	Zirconium	Zr	40	transition-metal	5	d	91.22	4408.85	6.52	—	1789	[Kr]5s2 4d2	1.33	4	1854.85	Solid
41	Niobium	Nb	41	transition-metal	5	d	92.90637	4743.85	8.57	—	1801	[Kr]5s1 4d4	1.6	5	2476.85	Solid
42	Molybdenum	Mo	42	transition-metal	5	d	95.95	4638.85	10.2	—	1778	[Kr]5s1 4d5	2.16	6	2622.85	Solid
43	Technetium	Tc	43	transition-metal	5	d	96.90636	4264.85	11	—	1937	[Kr]5s2 4d5	1.9	7	2156.85	Solid
44	Ruthenium	Ru	44	transition-metal	5	d	101.1	4149.85	12.1	—	1827	[Kr]5s1 4d7	2.2	8	2333.85	Solid
45	Rhodium	Rh	45	transition-metal	5	d	102.9055	3694.85	12.4	—	1803	[Kr]5s1 4d8	2.28	9	1963.85	Solid
46	Palladium	Pd	46	transition-metal	5	d	106.42	2962.85	12	—	1803	[Kr]4d10	2.2	10	1554.9	Solid
47	Silver	Ag	47	transition-metal	5	d	107.868	2161.85	10.501	—	Ancient	[Kr]5s1 4d10	1.93	11	961.78	Solid
48	Cadmium	Cd	48	transition-metal	5	d	112.41	766.85	8.69	—	1817	[Kr]5s2 4d10	1.69	12	321.07	Solid
49	Indium	In	49	post-transition-metal	5	p	114.818	2071.85	7.31	—	1863	[Kr]5s2 4d10 5p1	1.78	13	156.6	Solid
5	Boron	B	5	metalloid	2	p	10.81	3999.85	2.37	—	1808	[He]2s2 2p1	2.04	13	2074.85	Solid
50	Tin	Sn	50	post-transition-metal	5	p	118.71	2601.85	7.287	—	Ancient	[Kr]5s2 4d10 5p2	1.96	14	231.93	Solid
51	Antimony	Sb	51	metalloid	5	p	121.76	1586.85	6.685	—	Ancient	[Kr]5s2 4d10 5p3	2.05	15	630.63	Solid
52	Tellurium	Te	52	metalloid	5	p	127.6	987.85	6.232	—	1782	[Kr]5s2 4d10 5p4	2.1	16	449.51	Solid
53	Iodine	I	53	halogen	5	p	126.9045	184.4	4.93	—	1811	[Kr]5s2 4d10 5p5	2.66	17	113.7	Solid
54	Xenon	Xe	54	noble-gas	5	p	131.29	-108.12	0.005887	—	1898	[Kr]5s2 4d10 5p6	2.6	18	-111.79	Gas
55	Cesium	Cs	55	alkali-metal	6	s	132.905452	670.85	1.93	—	1860	[Xe]6s1	0.79	1	28.44	Solid
56	Barium	Ba	56	alkaline-earth-metal	6	s	137.33	1896.85	3.62	—	1808	[Xe]6s2	0.89	2	726.85	Solid
57	Lanthanum	La	57	lanthanide	6	f	138.9055	3463.85	6.15	—	1839	[Xe]6s2 5d1	1.1	—	917.85	Solid
58	Cerium	Ce	58	lanthanide	6	f	140.116	3423.85	6.77	—	1803	[Xe]6s2 4f1 5d1	1.12	—	797.85	Solid
59	Praseodymium	Pr	59	lanthanide	6	f	140.90766	3519.85	6.77	—	1885	[Xe]6s2 4f3	1.13	—	930.85	Solid
6	Carbon	C	6	reactive-nonmetal	2	p	12.011	3824.85	2.267	—	Ancient	[He]2s2 2p2	2.55	14	3549.85	Solid
60	Neodymium	Nd	60	lanthanide	6	f	144.24	3073.85	7.01	—	1885	[Xe]6s2 4f4	1.14	—	1020.85	Solid
61	Promethium	Pm	61	lanthanide	6	f	144.91276	2999.85	7.26	—	1945	[Xe]6s2 4f5	—	—	1041.85	Solid
62	Samarium	Sm	62	lanthanide	6	f	150.4	1793.85	7.52	—	1879	[Xe]6s2 4f6	1.17	—	1073.85	Solid
63	Europium	Eu	63	lanthanide	6	f	151.964	1528.85	5.24	—	1901	[Xe]6s2 4f7	—	—	821.85	Solid
64	Gadolinium	Gd	64	lanthanide	6	f	157.25	3272.85	7.9	—	1880	[Xe]6s2 4f7 5d1	1.2	—	1312.85	Solid
65	Terbium	Tb	65	lanthanide	6	f	158.92535	3229.85	8.23	—	1843	[Xe]6s2 4f9	—	—	1355.85	Solid
66	Dysprosium	Dy	66	lanthanide	6	f	162.5	2566.85	8.55	—	1886	[Xe]6s2 4f10	1.22	—	1411.85	Solid
67	Holmium	Ho	67	lanthanide	6	f	164.93033	2699.85	8.8	—	1878	[Xe]6s2 4f11	1.23	—	1473.85	Solid
68	Erbium	Er	68	lanthanide	6	f	167.26	2867.85	9.07	—	1843	[Xe]6s2 4f12	1.24	—	1528.85	Solid
69	Thulium	Tm	69	lanthanide	6	f	168.93422	1949.85	9.32	—	1879	[Xe]6s2 4f13	1.25	—	1544.85	Solid
7	Nitrogen	N	7	reactive-nonmetal	2	p	14.007	-195.79	0.0012506	—	1772	[He] 2s2 2p3	3.04	15	-210	Gas
70	Ytterbium	Yb	70	lanthanide	6	f	173.05	1195.85	6.9	—	1878	[Xe]6s2 4f14	—	—	818.85	Solid
71	Lutetium	Lu	71	lanthanide	6	f	174.9667	3401.85	9.84	—	1907	[Xe]6s2 4f14 5d1	1.27	—	1662.85	Solid
72	Hafnium	Hf	72	transition-metal	6	d	178.49	4602.85	13.3	—	1923	[Xe]6s2 4f14 5d2	1.3	4	2232.85	Solid
73	Tantalum	Ta	73	transition-metal	6	d	180.9479	5457.85	16.4	—	1802	[Xe]6s2 4f14 5d3	1.5	5	3016.85	Solid
74	Tungsten	W	74	transition-metal	6	d	183.84	5554.85	19.3	—	1783	[Xe]6s2 4f14 5d4	2.36	6	3421.85	Solid
75	Rhenium	Re	75	transition-metal	6	d	186.207	5595.85	20.8	—	1925	[Xe]6s2 4f14 5d5	1.9	7	3185.85	Solid
76	Osmium	Os	76	transition-metal	6	d	190.2	5011.85	22.57	—	1803	[Xe]6s2 4f14 5d6	2.2	8	3032.85	Solid
77	Iridium	Ir	77	transition-metal	6	d	192.22	4427.85	22.42	—	1803	[Xe]6s2 4f14 5d7	2.2	9	2445.85	Solid
78	Platinum	Pt	78	transition-metal	6	d	195.08	3824.85	21.46	—	1735	[Xe]6s1 4f14 5d9	2.28	10	1768.4	Solid
79	Gold	Au	79	transition-metal	6	d	196.96657	2855.85	19.282	—	Ancient	[Xe]6s1 4f14 5d10	2.54	11	1064.18	Solid
8	Oxygen	O	8	reactive-nonmetal	2	p	15.999	-182.95	0.001429	—	1774	[He]2s2 2p4	3.44	16	-218.79	Gas
80	Mercury	Hg	80	transition-metal	6	d	200.59	356.73	13.5336	—	Ancient	[Xe]6s2 4f14 5d10	2	12	-38.83	Liquid
81	Thallium	Tl	81	post-transition-metal	6	p	204.383	1472.85	11.8	—	1861	[Xe]6s2 4f14 5d10 6p1	1.62	13	303.85	Solid
82	Lead	Pb	82	post-transition-metal	6	p	207	1748.85	11.342	—	Ancient	[Xe]6s2 4f14 5d10 6p2	2.33	14	327.46	Solid