1 H氢1.00794
2 He氦4.002602
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
9 F氟18.998
10 Ne氖20.1797
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32.065
17 Cl氯35.453
18 Ar氩39.948
19 K钾39.098
20 Ca钙40.08
21 Sc钪44.956
22 Ti钛47.867
23 V 钒50.9415
24 Cr铬51.996
25 Mn锰54.938
26 Fe铁55.845
27 Co钴58.9332