List of the 118 elements

Every known element in order of atomic number. Select a name to open its page with the discovery story, name origin, uses and isotopes.

Atomic number	Symbol	Elements	Atomic weight	Category	Group	Period
1	H	Hydrogen	1.0080	Nonmetal	1	1
2	He	Helium	4.0026	Noble gas	18	1
3	Li	Lithium	6.94	Alkali metal	1	2
4	Be	Beryllium	9.0122	Alkaline earth metal	2	2
5	B	Boron	10.81	Metalloid	13	2
6	C	Carbon	12.011	Nonmetal	14	2
7	N	Nitrogen	14.007	Nonmetal	15	2
8	O	Oxygen	15.999	Nonmetal	16	2
9	F	Fluorine	18.998	Halogen	17	2
10	Ne	Neon	20.180	Noble gas	18	2
11	Na	Sodium	22.990	Alkali metal	1	3
12	Mg	Magnesium	24.305	Alkaline earth metal	2	3
13	Al	Aluminium	26.982	Post-transition metal	13	3
14	Si	Silicon	28.085	Metalloid	14	3
15	P	Phosphorus	30.974	Nonmetal	15	3
16	S	Sulfur	32.06	Nonmetal	16	3
17	Cl	Chlorine	35.45	Halogen	17	3
18	Ar	Argon	39.95	Noble gas	18	3
19	K	Potassium	39.098	Alkali metal	1	4
20	Ca	Calcium	40.078	Alkaline earth metal	2	4
21	Sc	Scandium	44.956	Transition metal	3	4
22	Ti	Titanium	47.867	Transition metal	4	4
23	V	Vanadium	50.942	Transition metal	5	4
24	Cr	Chromium	51.996	Transition metal	6	4
25	Mn	Manganese	54.938	Transition metal	7	4
26	Fe	Iron	55.845	Transition metal	8	4
27	Co	Cobalt	58.933	Transition metal	9	4
28	Ni	Nickel	58.693	Transition metal	10	4
29	Cu	Copper	63.546	Transition metal	11	4
30	Zn	Zinc	65.38	Transition metal	12	4
31	Ga	Gallium	69.723	Post-transition metal	13	4
32	Ge	Germanium	72.630	Metalloid	14	4
33	As	Arsenic	74.922	Metalloid	15	4
34	Se	Selenium	78.971	Nonmetal	16	4
35	Br	Bromine	79.904	Halogen	17	4
36	Kr	Krypton	83.798	Noble gas	18	4
37	Rb	Rubidium	85.468	Alkali metal	1	5
38	Sr	Strontium	87.62	Alkaline earth metal	2	5
39	Y	Yttrium	88.906	Transition metal	3	5
40	Zr	Zirconium	91.222	Transition metal	4	5
41	Nb	Niobium	92.906	Transition metal	5	5
42	Mo	Molybdenum	95.95	Transition metal	6	5
43	Tc	Technetium	[97]	Transition metal	7	5
44	Ru	Ruthenium	101.07	Transition metal	8	5
45	Rh	Rhodium	102.91	Transition metal	9	5
46	Pd	Palladium	106.42	Transition metal	10	5
47	Ag	Silver	107.87	Transition metal	11	5
48	Cd	Cadmium	112.41	Transition metal	12	5
49	In	Indium	114.82	Post-transition metal	13	5
50	Sn	Tin	118.71	Post-transition metal	14	5
51	Sb	Antimony	121.76	Metalloid	15	5
52	Te	Tellurium	127.60	Metalloid	16	5
53	I	Iodine	126.90	Halogen	17	5
54	Xe	Xenon	131.29	Noble gas	18	5
55	Cs	Caesium	132.91	Alkali metal	1	6
56	Ba	Barium	137.33	Alkaline earth metal	2	6
57	La	Lanthanum	138.91	Lanthanide	–	6
58	Ce	Cerium	140.12	Lanthanide	–	6
59	Pr	Praseodymium	140.91	Lanthanide	–	6
60	Nd	Neodymium	144.24	Lanthanide	–	6
61	Pm	Promethium	[145]	Lanthanide	–	6
62	Sm	Samarium	150.36	Lanthanide	–	6
63	Eu	Europium	151.96	Lanthanide	–	6
64	Gd	Gadolinium	157.25	Lanthanide	–	6
65	Tb	Terbium	158.93	Lanthanide	–	6
66	Dy	Dysprosium	162.50	Lanthanide	–	6
67	Ho	Holmium	164.93	Lanthanide	–	6
68	Er	Erbium	167.26	Lanthanide	–	6
69	Tm	Thulium	168.93	Lanthanide	–	6
70	Yb	Ytterbium	173.05	Lanthanide	–	6
71	Lu	Lutetium	174.97	Lanthanide	–	6
72	Hf	Hafnium	178.49	Transition metal	4	6
73	Ta	Tantalum	180.95	Transition metal	5	6
74	W	Tungsten	183.84	Transition metal	6	6
75	Re	Rhenium	186.21	Transition metal	7	6
76	Os	Osmium	190.23	Transition metal	8	6
77	Ir	Iridium	192.22	Transition metal	9	6
78	Pt	Platinum	195.08	Transition metal	10	6
79	Au	Gold	196.97	Transition metal	11	6
80	Hg	Mercury	200.59	Transition metal	12	6
81	Tl	Thallium	204.38	Post-transition metal	13	6
82	Pb	Lead	207.2	Post-transition metal	14	6
83	Bi	Bismuth	208.98	Post-transition metal	15	6
84	Po	Polonium	[209]	Metalloid	16	6
85	At	Astatine	[210]	Halogen	17	6
86	Rn	Radon	[222]	Noble gas	18	6
87	Fr	Francium	[223]	Alkali metal	1	7
88	Ra	Radium	[226]	Alkaline earth metal	2	7
89	Ac	Actinium	[227]	Actinide	–	7
90	Th	Thorium	232.04	Actinide	–	7
91	Pa	Protactinium	231.04	Actinide	–	7
92	U	Uranium	238.03	Actinide	–	7
93	Np	Neptunium	[237]	Actinide	–	7
94	Pu	Plutonium	[244]	Actinide	–	7
95	Am	Americium	[243]	Actinide	–	7
96	Cm	Curium	[247]	Actinide	–	7
97	Bk	Berkelium	[247]	Actinide	–	7
98	Cf	Californium	[251]	Actinide	–	7
99	Es	Einsteinium	[252]	Actinide	–	7
100	Fm	Fermium	[257]	Actinide	–	7
101	Md	Mendelevium	[258]	Actinide	–	7
102	No	Nobelium	[259]	Actinide	–	7
103	Lr	Lawrencium	[266]	Actinide	–	7
104	Rf	Rutherfordium	[267]	Transition metal	4	7
105	Db	Dubnium	[268]	Transition metal	5	7
106	Sg	Seaborgium	[269]	Transition metal	6	7
107	Bh	Bohrium	[270]	Transition metal	7	7
108	Hs	Hassium	[269]	Transition metal	8	7
109	Mt	Meitnerium	[277]	Transition metal	9	7
110	Ds	Darmstadtium	[282]	Transition metal	10	7
111	Rg	Roentgenium	[282]	Transition metal	11	7
112	Cn	Copernicium	[286]	Transition metal	12	7
113	Nh	Nihonium	[286]	Post-transition metal	13	7
114	Fl	Flerovium	[290]	Post-transition metal	14	7
115	Mc	Moscovium	[290]	Post-transition metal	15	7
116	Lv	Livermorium	[293]	Post-transition metal	16	7
117	Ts	Tennessine	[294]	Halogen	17	7
118	Og	Oganesson	[294]	Noble gas	18	7

Data sources · Properties: PubChem Periodic Table (US NIH/NLM public data) · Atomic weights: CIAAW 2024 abridged standard atomic weights · Names: Wikidata (CC0); Korean names follow the Korean Chemical Society. Retrieved 2026-09-23.