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