第1个回答 2019-11-11
1
H氢1.0079
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
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