Periodic table (electron configurations)
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Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| IA | IIA | IIIB | IVB | VB | VIB | VIIB | ---- | VIIIB | ---- | IB | IIB | IIIA | IVA | VA | VIA | VIIA | VIIIA |
Period | | |||||||||||||||||
1 1s | 1 H 1 | | 2 He 2 | |||||||||||||||
2 2s 2p | 3 Li 1 | 4 Be 2 | | 5 B 2 1 | 6 C 2 2 | 7 N 2 3 | 8 O 2 4 | 9 F 2 5 | 10 Ne 2 6 | |||||||||
3 3s 3p | 11 Na 1 | 12 Mg 2 | | 13 Al 2 1 | 14 Si 2 2 | 15 P 2 3 | 16 S 2 4 | 17 Cl 2 5 | 18 Ar 2 6 | |||||||||
4 4s 3d 4p | 19 K 1 | 20 Ca 2 | 21 Sc 2 1 | 22 Ti 2 2 | 23 V 2 3 | 24 Cr 1 5 | 25 Mn 2 5 | 26 Fe 2 6 | 27 Co 2 7 | 28 Ni 2 8 | 29 Cu 1 10 | 30 Zn 2 10 | 31 Ga 2 10 1 | 32 Ge 2 10 2 | 33 As 2 10 3 | 34 Se 2 10 4 | 35 Br 2 10 5 | 36 Kr 2 10 6 |
5 5s 4d 5p | 37 Rb 1 | 38 Sr 2 | 39 Y 2 1 | 40 Zr 2 2 | 41 Nb 1 4 | 42 Mo 2 4 | (43) Tc 2 5 | 44 Ru 2 6 | 45 Rh 2 7 | 46 Pd 0 10 | 47 Ag 1 10 | 48 Cd 2 10 | 49 In 2 10 1 | 50 Sn 2 10 2 | 51 Sb 2 10 3 | 52 Te 2 10 4 | 53 I 2 10 5 | 54 Xe 2 10 6 |
6 6s 4f 5d 6p | 55 Cs 1 | 56 Ba 2 | * | 72 Hf 2 14 2 | 73 Ta 2 14 3 | 74 W 2 14 4 | 75 Re 2 14 5 | 76 Os 2 14 6 | 77 Ir 2 14 7 | 78 Pt 1 14 9 | 79 Au 1 14 10 | 80 Hg 2 14 10 | 81 Tl 2 14 10 1 | 82 Pb 2 14 10 2 | 83 Bi 2 14 10 3 | 84 Po 2 14 10 4 | 85 At 2 14 10 5 | 86 Rn 2 14 10 6 |
7 7s 5f 6d 7p | 87 Fr 1 | 88 Ra 2 | ** | (104) Rf 2 14 2 | (105) Db 2 14 3 | (106) Sg 2 14 4 | (107) Bh 2 14 5 | (108) Hs 2 14 6 | (109) Mt 2 14 7 | (110) Ds 2 14 8 | (111) Rg 2 14 9 | (112) Uub 2 14 10 | (113) Uut 2 14 10 1</font> | (114) Uuq 2 14 10 2 | (115) Uup 2 14 10 3</font> | (116) Uuh 2 14 10 4</font> | (117) Uus 2 14 10 5 | (118) Uuo 2 14 10 6 |
* Lanthanides 6s 4f 5d | 57 La 2 0 1 | 58 Ce 2 2 0 | 59 Pr 2 3 0 | 60 Nd 2 4 0 | (61) Pm 2 5 0 | 62 Sm 2 6 0 | 63 Eu 2 7 0 | 64 Gd 2 7 1 | 65 Tb 2 9 0 | 66 Dy 2 10 0 | 67 Ho 2 11 0 | 68 Er 2 12 0 | 69 Tm 2 13 0 | 70 Yb 2 14 0 | 71 Lu 2 14 1 | |||
** Actinides 7s 5f 6d | 89 Ac 2 0 1 | 90 Th 2 0 2 | 91 Pa 2 2 1 | 92 U 2 3 1 | (93) Np 2 4 1 | (94) Pu 2 6 0 | (95) Am 2 7 0 | (96) Cm 2 7 1 | (97) Bk 2 9 0 | (98) Cf 2 10 0 | (99) Es 2 11 0 | (100) Fm 2 12 0 | (101) Md 2 13 0 | (102) No 2 14 0 | (103) Lr 2 14 1 |