Объяснение:
Mg-12
AI-13
F-9
S-16
K-19
Ar-18
Fe-26
W-74
Hg-80
Au-79
Ag-47
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Answers & Comments
Объяснение:
Mg-12
AI-13
F-9
S-16
K-19
Ar-18
Fe-26
W-74
Hg-80
Au-79
Ag-47