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Interactive periodic table

Explore all 118 elements. In the app, tap an element to see its animated electron shells, electron configuration, electronegativity, flame-test colour and the chemicals that contain it, then work out molar masses with the built-in calculator. Below, every element has its own page with its electron configuration, Bohr model and key facts.

▶ Open the interactive periodic table

All 118 elements

#	Symbol	Name	Atomic mass	Electron configuration	Category
1	H	Hydrogen	1.008	1s¹	Reactive nonmetal
2	He	Helium	4.0026	1s²	Noble gas
3	Li	Lithium	6.94	[He] 2s¹	Alkali metal
4	Be	Beryllium	9.0122	[He] 2s²	Alkaline earth metal
5	B	Boron	10.81	[He] 2s² 2p¹	Metalloid
6	C	Carbon	12.011	[He] 2s² 2p²	Reactive nonmetal
7	N	Nitrogen	14.007	[He] 2s² 2p³	Reactive nonmetal
8	O	Oxygen	15.999	[He] 2s² 2p⁴	Reactive nonmetal
9	F	Fluorine	18.998	[He] 2s² 2p⁵	Halogen
10	Ne	Neon	20.180	[He] 2s² 2p⁶	Noble gas
11	Na	Sodium	22.990	[Ne] 3s¹	Alkali metal
12	Mg	Magnesium	24.305	[Ne] 3s²	Alkaline earth metal
13	Al	Aluminium	26.982	[Ne] 3s² 3p¹	Post-transition metal
14	Si	Silicon	28.085	[Ne] 3s² 3p²	Metalloid
15	P	Phosphorus	30.974	[Ne] 3s² 3p³	Reactive nonmetal
16	S	Sulfur	32.065	[Ne] 3s² 3p⁴	Reactive nonmetal
17	Cl	Chlorine	35.453	[Ne] 3s² 3p⁵	Halogen
18	Ar	Argon	39.948	[Ne] 3s² 3p⁶	Noble gas
19	K	Potassium	39.098	[Ar] 4s¹	Alkali metal
20	Ca	Calcium	40.078	[Ar] 4s²	Alkaline earth metal
21	Sc	Scandium	44.956	[Ar] 3d¹ 4s²	Transition metal
22	Ti	Titanium	47.867	[Ar] 3d² 4s²	Transition metal
23	V	Vanadium	50.942	[Ar] 3d³ 4s²	Transition metal
24	Cr	Chromium	51.996	[Ar] 3d⁵ 4s¹	Transition metal
25	Mn	Manganese	54.938	[Ar] 3d⁵ 4s²	Transition metal
26	Fe	Iron	55.845	[Ar] 3d⁶ 4s²	Transition metal
27	Co	Cobalt	58.933	[Ar] 3d⁷ 4s²	Transition metal
28	Ni	Nickel	58.693	[Ar] 3d⁸ 4s²	Transition metal
29	Cu	Copper	63.546	[Ar] 3d¹⁰ 4s¹	Transition metal
30	Zn	Zinc	65.38	[Ar] 3d¹⁰ 4s²	Transition metal
31	Ga	Gallium	69.723	[Ar] 3d¹⁰ 4s² 4p¹	Post-transition metal
32	Ge	Germanium	72.630	[Ar] 3d¹⁰ 4s² 4p²	Metalloid
33	As	Arsenic	74.922	[Ar] 3d¹⁰ 4s² 4p³	Metalloid
34	Se	Selenium	78.971	[Ar] 3d¹⁰ 4s² 4p⁴	Reactive nonmetal
35	Br	Bromine	79.904	[Ar] 3d¹⁰ 4s² 4p⁵	Halogen
36	Kr	Krypton	83.798	[Ar] 3d¹⁰ 4s² 4p⁶	Noble gas
37	Rb	Rubidium	85.468	[Kr] 5s¹	Alkali metal
38	Sr	Strontium	87.62	[Kr] 5s²	Alkaline earth metal
39	Y	Yttrium	88.906	[Kr] 4d¹ 5s²	Transition metal
40	Zr	Zirconium	91.224	[Kr] 4d² 5s²	Transition metal
41	Nb	Niobium	92.906	[Kr] 4d⁴ 5s¹	Transition metal
42	Mo	Molybdenum	95.95	[Kr] 4d⁵ 5s¹	Transition metal
43	Tc	Technetium	[98]	[Kr] 4d⁵ 5s²	Transition metal
44	Ru	Ruthenium	101.07	[Kr] 4d⁷ 5s¹	Transition metal
45	Rh	Rhodium	102.91	[Kr] 4d⁸ 5s¹	Transition metal
46	Pd	Palladium	106.42	[Kr] 4d¹⁰	Transition metal
47	Ag	Silver	107.87	[Kr] 4d¹⁰ 5s¹	Transition metal
48	Cd	Cadmium	112.41	[Kr] 4d¹⁰ 5s²	Transition metal
49	In	Indium	114.82	[Kr] 4d¹⁰ 5s² 5p¹	Post-transition metal
50	Sn	Tin	118.71	[Kr] 4d¹⁰ 5s² 5p²	Post-transition metal
51	Sb	Antimony	121.76	[Kr] 4d¹⁰ 5s² 5p³	Metalloid
52	Te	Tellurium	127.60	[Kr] 4d¹⁰ 5s² 5p⁴	Metalloid
53	I	Iodine	126.90	[Kr] 4d¹⁰ 5s² 5p⁵	Halogen
54	Xe	Xenon	131.29	[Kr] 4d¹⁰ 5s² 5p⁶	Noble gas
55	Cs	Caesium	132.91	[Xe] 6s¹	Alkali metal
56	Ba	Barium	137.33	[Xe] 6s²	Alkaline earth metal
57	La	Lanthanum	138.91	[Xe] 5d¹ 6s²	Lanthanide
58	Ce	Cerium	140.12	[Xe] 4f¹ 5d¹ 6s²	Lanthanide
59	Pr	Praseodymium	140.91	[Xe] 4f³ 6s²	Lanthanide
60	Nd	Neodymium	144.24	[Xe] 4f⁴ 6s²	Lanthanide
61	Pm	Promethium	[145]	[Xe] 4f⁵ 6s²	Lanthanide
62	Sm	Samarium	150.36	[Xe] 4f⁶ 6s²	Lanthanide
63	Eu	Europium	151.96	[Xe] 4f⁷ 6s²	Lanthanide
64	Gd	Gadolinium	157.25	[Xe] 4f⁷ 5d¹ 6s²	Lanthanide
65	Tb	Terbium	158.93	[Xe] 4f⁹ 6s²	Lanthanide
66	Dy	Dysprosium	162.50	[Xe] 4f¹⁰ 6s²	Lanthanide
67	Ho	Holmium	164.93	[Xe] 4f¹¹ 6s²	Lanthanide
68	Er	Erbium	167.26	[Xe] 4f¹² 6s²	Lanthanide
69	Tm	Thulium	168.93	[Xe] 4f¹³ 6s²	Lanthanide
70	Yb	Ytterbium	173.05	[Xe] 4f¹⁴ 6s²	Lanthanide
71	Lu	Lutetium	174.97	[Xe] 4f¹⁴ 5d¹ 6s²	Lanthanide
72	Hf	Hafnium	178.49	[Xe] 4f¹⁴ 5d² 6s²	Transition metal
73	Ta	Tantalum	180.95	[Xe] 4f¹⁴ 5d³ 6s²	Transition metal
74	W	Tungsten	183.84	[Xe] 4f¹⁴ 5d⁴ 6s²	Transition metal
75	Re	Rhenium	186.21	[Xe] 4f¹⁴ 5d⁵ 6s²	Transition metal
76	Os	Osmium	190.23	[Xe] 4f¹⁴ 5d⁶ 6s²	Transition metal
77	Ir	Iridium	192.22	[Xe] 4f¹⁴ 5d⁷ 6s²	Transition metal
78	Pt	Platinum	195.08	[Xe] 4f¹⁴ 5d⁹ 6s¹	Transition metal
79	Au	Gold	196.97	[Xe] 4f¹⁴ 5d¹⁰ 6s¹	Transition metal
80	Hg	Mercury	200.59	[Xe] 4f¹⁴ 5d¹⁰ 6s²	Transition metal
81	Tl	Thallium	204.38	[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p¹	Post-transition metal
82	Pb	Lead	207.2	[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p²	Post-transition metal
83	Bi	Bismuth	208.98	[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p³	Post-transition metal
84	Po	Polonium	[209]	[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁴	Post-transition metal
85	At	Astatine	[210]	[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁵	Halogen
86	Rn	Radon	[222]	[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁶	Noble gas
87	Fr	Francium	[223]	[Rn] 7s¹	Alkali metal
88	Ra	Radium	[226]	[Rn] 7s²	Alkaline earth metal
89	Ac	Actinium	[227]	[Rn] 6d¹ 7s²	Actinide
90	Th	Thorium	232.04	[Rn] 6d² 7s²	Actinide
91	Pa	Protactinium	231.04	[Rn] 5f² 6d¹ 7s²	Actinide
92	U	Uranium	238.03	[Rn] 5f³ 6d¹ 7s²	Actinide
93	Np	Neptunium	[237]	[Rn] 5f⁴ 6d¹ 7s²	Actinide
94	Pu	Plutonium	[244]	[Rn] 5f⁶ 7s²	Actinide
95	Am	Americium	[243]	[Rn] 5f⁷ 7s²	Actinide
96	Cm	Curium	[247]	[Rn] 5f⁷ 6d¹ 7s²	Actinide
97	Bk	Berkelium	[247]	[Rn] 5f⁹ 7s²	Actinide
98	Cf	Californium	[251]	[Rn] 5f¹⁰ 7s²	Actinide
99	Es	Einsteinium	[252]	[Rn] 5f¹¹ 7s²	Actinide
100	Fm	Fermium	[257]	[Rn] 5f¹² 7s²	Actinide
101	Md	Mendelevium	[258]	[Rn] 5f¹³ 7s²	Actinide
102	No	Nobelium	[259]	[Rn] 5f¹⁴ 7s²	Actinide
103	Lr	Lawrencium	[266]	[Rn] 5f¹⁴ 7s² 7p¹	Actinide
104	Rf	Rutherfordium	[267]	[Rn] 5f¹⁴ 6d² 7s²	Transition metal
105	Db	Dubnium	[268]	[Rn] 5f¹⁴ 6d³ 7s²	Transition metal
106	Sg	Seaborgium	[269]	[Rn] 5f¹⁴ 6d⁴ 7s²	Transition metal
107	Bh	Bohrium	[270]	[Rn] 5f¹⁴ 6d⁵ 7s²	Transition metal
108	Hs	Hassium	[269]	[Rn] 5f¹⁴ 6d⁶ 7s²	Transition metal
109	Mt	Meitnerium	[278]	[Rn] 5f¹⁴ 6d⁷ 7s²	Transition metal
110	Ds	Darmstadtium	[281]	[Rn] 5f¹⁴ 6d⁸ 7s²	Transition metal
111	Rg	Roentgenium	[282]	[Rn] 5f¹⁴ 6d⁹ 7s²	Transition metal
112	Cn	Copernicium	[285]	[Rn] 5f¹⁴ 6d¹⁰ 7s²	Transition metal
113	Nh	Nihonium	[286]	[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p¹	Post-transition metal
114	Fl	Flerovium	[289]	[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p²	Post-transition metal
115	Mc	Moscovium	[290]	[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p³	Post-transition metal
116	Lv	Livermorium	[293]	[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁴	Post-transition metal
117	Ts	Tennessine	[294]	[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁵	Halogen
118	Og	Oganesson	[294]	[Rn] 5f¹⁴ 6d¹⁰ 7s² 7p⁶	Noble gas

Frequently asked questions

How many elements are on the periodic table?

There are 118 confirmed elements, from hydrogen (1) to oganesson (118). Elements from 104 upwards have only been made a few atoms at a time, so many of their properties are predicted.

How is the periodic table arranged?

Elements are arranged in order of atomic number (the number of protons). Rows are called periods and match the number of electron shells; columns are called groups, and elements in the same group have the same number of outer electrons, so they react in similar ways.

What are the blocks of the periodic table?

The s-, p-, d- and f-blocks show which subshell the outermost electrons fill. Groups 1–2 are the s-block, groups 13–18 the p-block, the transition metals the d-block, and the lanthanides and actinides the f-block.