1 H 1.008
2 He 4.003
3 Li 6.939
4 Be 9.012
5 B 10.81
6 C 12.011
7 N 14.007
8 O 15.999
9 F 18.998
10 Ne 20.183
11 Na 22.990
12 Mg 24.310
13 Al 26.980
14 Si 28.090
15 P 30.974
16 S 32.064
17 Cl 35.453
18 Ar 39.948
19 K 39.098
20 Ca 40.078
21 Sc 44.956
22 Ti 47.880
23 V 50.942
24 Cr 51.996
25 Mn 54.938
26 Fe 55.847
27 Co 58.933
28 Ni 58.690
29 Cu 63.546
30 Zn 65.390
31 Ga 69.720
32 Ge 72.610
33 As 74.922
34 Se 78.960
35 Br 79.904
36 Kr 83.800
37 Rb 85.468
38 Sr 87.620
39 Y 88.906
40 Zr 91.224
41 Nb 92.906
42 Mo 95.940
43 Tc 98.000
44 Ru 101.07
45 Rh 102.91
46 Pd 106.42
47 Ag 107.87
48 Cd 112.41
49 In 114.82
50 Sn 118.71
51 Sb 121.76
52 Te 127.60
53 I 126.90
54 Xe 131.29
55 Cs 132.91
56 Ba 137.33
57 *La 138.91
72 Hf 178.49
73 Ta 180.95
74 W 183.85
75 Re 186.21
76 Os 190.020
77 Ir 192.22
78 Pt 195.08
79 Au 196.97
80 Hg 200.59
81 Tl 204.38
82 Pb 207.20
83 Bi 208.98
84 Po 209.00
85 At 210.00
86 Rn 222.00
87 Fr 223.00
88 Ra 226.03
89 **Ac 227.03
104 Rf 261.00
105 Db 262.00
106 Sg 263.00
107 Bh 262.00
108 Hs 265.00
109 Mt 266.00
110 Ds 269.00
111 Rg 272.00
112 Cn 277.00
113 Nh 284.00
114 Fl 289.00
115 Mc 288.00
116 Lv 292.00
117 Ts 294.00
118 Og 293.00
119 Uuu 00
120 Uuu 00
121 Uuu 00
122 Uuu 00
123 Uuu 00
124 Uuu 00
125 Uuu 00
126 Uuu 00
127 Uuu 00
128 Uuu 00
129 Uuu 00
130 Uuu 00
131 Uuu 00
132 Uuu 00
133 Uuu 00
134 Uuu 00
135 Uuu 00
136 Uuu 00
58 Ce 140.12
59 Pr 140.91
60 Nd 144.24
61 Pm 145.00
62 Sm 150.36
63 Eu 151.96
64 Gd 157.25
65 Tb 158.93
66 Dy 163.50
67 Ho 164.93
68 Er 167.26
69 Tm 168.93
70 Yb 173.04
71 Lu 174.97
90 Th 232.04
91 Pa 231.04
92 U 238.03
93 Np 237.05
94 Pu 244.00
95 Am 243.00
96 Cm 247.00
97 Bk 247.00
98 Cf 251.00
99 Es 252.00
100 Fm 257.00
101 Md 258.00
102 No 259.00
103 Lr 260.00