Group Period
1
2
1
1
1.006
2
3
6.94
4
9.0122
3
11
22.990
12
24.305
4
19
39.098
20
40.078
5
37
85.468
38
87.62
6
55
132.91
56
137.33
7
87
[223.02]
88
[226.03]
*
**
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
2
4.0026
5
10.81
6
12.011
7
14.007
8
15.999
9
18.998
10
20.180
13
26.982
14
28.085
15
30.974
16
32.06
17
35.45
18
39.938
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
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
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]
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]