| Group | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | |||||||||||||||||||
| 1 |
1
1.008
|
2
4.0026
|
|||||||||||||||||
| 2 |
3
6.94
|
4
9.0122
|
5
10.81
|
6
12.011
|
7
14.007
|
8
15.999
|
9
18.998
|
10
20.180
|
|||||||||||
| 3 |
11
22.990
|
12
24.305
|
13
26.982
|
14
28.085
|
15
30.974
|
16
32.06
|
17
35.45
|
18
39.948
|
|||||||||||
| 4 |
19
39.098
|
20
40.078
|
21
44.956
|
22
47.867
|
23
50.942
|
24
51.996
|
25
54.938
|
26
55.845
|
27
58.933
|
28
58.693
|
29
63.546
|
30
65.38
|
31
69.723
|
32
72.63
|
33
74.922
|
34
78.96
|
35
79.904
|
36
83.798
|
|
| 5 |
37
85.468
|
38
87.62
|
39
88.906
|
40
91.224
|
41
92.906
|
42
95.96
|
43
[97.91]
|
44
101.07
|
45
102.91
|
46
106.42
|
47
107.87
|
48
112.41
|
49
114.82
|
50
118.71
|
51
121.76
|
52
127.60
|
53
126.90
|
54
131.29
|
|
| 6 |
55
132.91
|
56
137.33
|
* |
71
174.97
|
72
178.49
|
73
180.95
|
74
183.84
|
75
186.21
|
76
190.23
|
77
192.22
|
78
195.08
|
79
196.97
|
80
200.59
|
81
204.38
|
82
207.2
|
83
208.98
|
84
[208.98]
|
85
[209.99]
|
86
[222.02]
|
| 7 |
87
[223.02]
|
88
[226.03]
|
** |
103
[262.11]
|
104
[265.12]
|
105
[268.13]
|
106
[271.13]
|
107
[270]
|
108
[277.15]
|
109
[276.15]
|
110
[281.16]
|
111
[280.16]
|
112
[285.17]
|
113
[284.18]
|
114
[289.19]
|
115
[288.19]
|
116
[293]
|
117
[294]
|
118
[294]
|
| *Lanthanoids | * |
57
138.91
|
58
140.12
|
59
140.91
|
60
144.24
|
61
[144.91]
|
62
150.36
|
63
151.96
|
64
157.25
|
65
158.93
|
66
162.50
|
67
164.93
|
68
167.26
|
69
168.93
|
70
173.05
|
||||
| **Actinoids | ** |
89
[227.03]
|
90
232.04
|
91
231.04
|
92
238.03
|
93
[237.05]
|
94
[244.06]
|
95
[243.06]
|
96
[247.07]
|
97
[247.07]
|
98
[251.08]
|
99
[252.08]
|
100
[257.10]
|
101
[258.10]
|
102
[259.10]
|
||||
