Periodic Table Navigator

See how the elements are related to each other

Period		Group
		1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
	1	1 H Hydrogen 1s¹	2 He Helium 1s²
	2	3 Li Lithium 2s¹	4 Be Beryllium 2s²											5 B Boron 2s² 2p¹	6 C Carbon 2s² 2p²	7 N Nitrogen 2s² 2p³	8 O Oxygen 2s² 2p⁴	9 F Fluorine 2s² 2p⁵	10 Ne Neon 2s² 2p⁶
	3	11 Na Sodium 3s¹	12 Mg Magnesium 3s²											13 Al Aluminum 3s² 3p¹	14 Si Silicon 3s² 3p²	15 P Phosphorus 3s² 3p³	16 S Sulfur 3s² 3p⁴	17 Cl Chlorine 3s² 3p⁵	18 Ar Argon 3s² 3p⁶
	4	19 K Potassium 4s¹	20 Ca Calcium 4s²	21 Sc Scandium 4s² 3d¹	22 Ti Titanium 4s² 3d²	23 V Vanadium 4s² 3d³	24 Cr Chromium 4s¹ 3d⁵	25 Mn Manganese 4s² 3d⁵	26 Fe Iron 4s² 3d⁶	27 Co Cobalt 4s² 3d⁷	28 Ni Nickel 4s² 3d⁸	29 Cu Copper 4s¹ 3d¹⁰	30 Zn Zinc 4s² 3d¹⁰	31 Ga Gallium 4s² 3d¹⁰ 4p¹	32 Ge Germanium 4s² 3d¹⁰ 4p²	33 As Arsenic 4s² 3d¹⁰ 4p³	34 Se Selenium 4s² 3d¹⁰ 4p⁴	35 Br Bromine 4s² 3d¹⁰ 4p⁵	36 Kr Krypton 4s² 3d¹⁰ 4p⁶
	5	37 Rb Rubidium 5s¹	38 Sr Strontium 5s²	39 Y Yttrium 5s² 4d¹	40 Zr Zirconium 5s² 4d²	41 Nb Niobium 5s² 4d³	42 Mo Molybdenum 5s¹ 4d⁵	43 Tc Technetium 5s² 4d⁵	44 Ru Ruthenium 5s² 4d⁶	45 Rh Rhodium 5s² 4d⁷	46 Pd Palladium 5s² 4d⁸	47 Ag Silver 5s¹ 4d¹⁰	48 Cd Cadmium 5s² 4d¹⁰	49 In Indium 5s² 4d¹⁰ 5p¹	50 Sn Tin 5s² 4d¹⁰ 5p²	51 Sb Antimony 5s² 4d¹⁰ 5p³	52 Te Tellurium 5s² 4d¹⁰ 5p⁴	53 I Iodine 5s² 4d¹⁰ 5p⁵	54 Xe Xenon 5s² 4d¹⁰ 5p⁶
	6	55 Cs Cesium 6s¹	56 Ba^★ Barium 6s²	71 Lu Lutetium 6s² 4f¹⁴ 5d¹	72 Hf Hafnium 6s² 4f¹⁴ 5d²	73 Ta Tantalum 6s² 4f¹⁴ 5d³	74 W Tungsten 6s² 4f¹⁴ 5d⁴	75 Re Rhenium 6s² 4f¹⁴ 5d⁵	76 Os Osmium 6s² 4f¹⁴ 5d⁶	77 Ir Iridium 6s² 4f¹⁴ 5d⁷	78 Pt Platinum 6s¹ 4f¹⁴ 5d⁹	79 Au Gold 6s¹ 4f¹⁴ 5d¹⁰	80 Hg Mercury 6s² 4f¹⁴ 5d¹⁰	81 Tl Thallium 6s² 4f¹⁴ 5d¹⁰ 6p¹	82 Pb Lead 6s² 4f¹⁴ 5d¹⁰ 6p²	83 Bi Bismuth 6s² 4f¹⁴ 5d¹⁰ 6p³	84 Po Polonium 6s² 4f¹⁴ 5d¹⁰ 6p⁴	85 At Astatine 6s² 4f¹⁴ 5d¹⁰ 6p⁵	86 Rn Radon 6s² 4f¹⁴ 5d¹⁰ 6p⁶
	7	87 Fr Francium 7s¹	88 Ra^★★ Radium 7s²	103 Lr Lawrencium 7s² 5f¹⁴ 7p¹	104 Rf Rutherfordium 7s² 5f¹⁴ 6d²	105 Db Dubnium 7s² 5f¹⁴ 6d³	106 Sg Seaborgium 7s² 5f¹⁴ 6d⁴	107 Bh Bohrium 7s² 5f¹⁴ 6d⁵	108 Hs Hassium 7s² 5f¹⁴ 6d⁶	109 Mt Meitnerium 7s² 5f¹⁴ 6d⁷	110 Ds Darmstadtium 7s¹ 5f¹⁴ 6d⁹	111 Rg Roentgenium 7s¹ 5f¹⁴ 6d¹⁰	112 Cn Copernicium 7s² 5f¹⁴ 6d¹⁰	113 Nh Nihonium 7s² 5f¹⁴ 6d¹⁰ 7p¹	114 Fl Flerovium 7s² 5f¹⁴ 6d¹⁰ 7p²	115 Mc Moscovium 7s² 5f¹⁴ 6d¹⁰ 7p³	116 Lv Livermorium 7s² 5f¹⁴ 6d¹⁰ 7p⁴	117 Ts Tennessine 7s² 5f¹⁴ 6d¹⁰ 7p⁵	118 Og Oganesson 7s² 5f¹⁴ 6d¹⁰ 7p⁶
				f1	f2	f3	f4	f5	f6	f7	f8	f9	f10	f11	f12	f13	f14
	6		★	57 La Lanthanum 6s² 5d¹	58 Ce Cerium 6s² 4f¹ 5d¹	59 Pr Praseodymium 6s² 4f³	60 Nd Neodymium 6s² 4f⁴	61 Pm Promethium 6s² 4f⁵	62 Sm Samarium 6s² 4f⁶	63 Eu Europium 6s² 4f⁷	64 Gd Gadolinium 6s² 4f⁷ 5d¹	65 Tb Terbium 6s² 4f⁹	66 Dy Dysprosium 6s² 4f¹⁰	67 Ho Holmium 6s² 4f¹¹	68 Er Erbium 6s² 4f¹²	69 Tm Thulium 6s² 4f¹³	70 Yb Ytterbium 6s² 4f¹⁴
	7		★★	89 Ac Actinium 7s² 6d¹	90 Th Thorium 7s² 6d²	91 Pa Protactinium 7s² 5f² 6d¹	92 U Uranium 7s² 5f³ 6d¹	93 Np Neptunium 7s² 5f⁴ 6d¹	94 Pu Plutonium 7s² 5f⁶	95 Am Americium 7s² 5f⁷	96 Cm Curium 7s² 5f⁷ 6d¹	97 Bk Berkelium 7s² 5f⁹	98 Cf Californium 7s² 5f¹⁰	99 Es Einsteinium 7s² 5f¹¹	100 Fm Fermium 7s² 5f¹²	101 Md Mendelevium 7s² 5f¹³	102 No Nobelium 7s² 5f¹⁴

Note: Only valence electrons are shown on this page to save space.

Tip: Hover over an element to compare its electron configuration to that of the element to its right.

Legend

3d¹⁰ Different electron shell (n)

3d¹⁰ Different electron count

3d¹⁰ New term (orbital)