Gruppe
Periode
1
18
1
1
H
Hydrogen
2
13
14
15
16
17
2
He
Helium
2
3
Li
Lithium
4
Be
Beryllium
5
B
Bor
6
C
Carbon
7
N
Nitrogen
8
O
Oxygen
9
F
Fluor
10
Ne
Neon
3
11
Na
Natrium
12
Mg
Magnesium
3
4
5
6
7
8
9
10
11
12
13
Al
Aluminium
14
Si
Silicium
15
P
Phosphor
16
S
Svovl
17
Cl
Chlor
18
Ar
Argon
4
19
K
Kalium
20
Ca
Calcium
21
Sc
Scandium
22
Ti
Titan
23
V
Vanadium
24
Cr
Chrom
25
Mn
Mangan
26
Fe
Jern
27
Co
Kobolt
28
Ni
Nikkel
29
Cu
Kobber
30
Zn
Zink
31
Ga
Gallium
32
Ge
Germanium
33
As
Arsen
34
Se
Selen
35
Br
Brom
36
Kr
Krypton
5
37
Rb
Rubidium
38
Sr
Strontium
39
Y
Yttrium
40
Zr
Zirkonium
41
Nb
Niobium
42
Mo
Molybdæn
43
Tc
Technetium
44
Ru
Ruthenium
45
Rh
Rhodium
46
Pd
Palladium
47
Ag
Sølv
48
Cd
Cadmium
49
In
Indium
50
Sn
Tin
51
Sb
Antimon
52
Te
Tellur
53
I
Iod
54
Xe
Xenon
6
55
Cs
Cæsium
56
Ba
Barium
72
Hf
Hafnium
73
Ta
Tantal
74
W
Wolfram
75
Re
Rhenium
76
Os
Osmium
77
Ir
Iridium
78
Pt
Platin
79
Au
Guld
80
Hg
Kviksølv
81
Tl
Thallium
82
Pb
Bly
83
Bi
Bismuth
84
Po
Polonium
85
At
Astat
86
Rn
Radon
7
87
Fr
Francium
88
Ra
Radium
104
Rf
Rutherfordium
105
Db
Dubnium
106
Sg
Seaborgium
107
Bh
Bohrium
108
Hs
Hassium
109
Mt
Meitnerium
110
Ds
Darmstadtium
111
Rg
Røntgenium
112
Cn
Copernicium
113
Nh
Nihonium
114
Fl
Flerovium
115
Mc
Moscovium
116
Lv
Livermorium
117
Ts
Tennessin
118
Og
Oganesson
57
La
Lanthan
58
Ce
Cerium
59
Pr
Praseodym
60
Nd
Neodym
61
Pm
Promethium
62
Sm
Samarium
63
Eu
Europium
64
Gd
Gadolinium
65
Tb
Terbium
66
Dy
Dysprosium
67
Ho
Holmium
68
Er
Erbium
69
Tm
Thulium
70
Yb
Ytterbium
71
Lu
Lutetium
Metaller
89
Ac
Actinium
90
Th
Thorium
91
Pa
Protactinium
92
U
Uran
93
Np
Neptunium
94
Pu
Plutonium
95
Am
Americium
96
Cm
Curium
97
Bk
Berkelium
98
Cf
Californium
99
Es
Einsteinium
100
Fm
Fermium
101
Md
Mendelevium
102
No
Nobelium
103
Lr
Lawrencium
Ikke-metaller