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