1 H 氢1.0079（相对原子质量）
2 He 氦4.0026
3 Li 锂6.941
4 Be 铍9.0122
5 B 硼10.811
6 C 碳12.011
7 N 氮14.007
8 O 氧15.999 4(3)
9 F 氟18.998
10 Ne 氖20.17
11 Na 钠22.9898
12 Mg 镁24.305
13 Al 铝26.982
14 Si 硅28.085
15 P 磷30.974
16 S 硫32.06
17 Cl 氯35.453
18 Ar 氩39.94
19 K 钾39.098
20 Ca 钙40.08
21 Sc 钪44.956
22 Ti 钛47.9
23 V 钒50.94
24 Cr 铬51.996
25 Mn 锰54.938
26 Fe 铁55.84
27 Co 钴58.9332
28 Ni 镍58.69
29 Cu 铜63.54
30 Zn 锌65.38
31 Ga 镓69.72
32 Ge 锗72.5
33 As砷74.922
34 Se硒78.9
35 Br溴79.904
