A
Mr(H2)=2
Mr(N2)=28
Mr(O2)=32
Mr(F2)=38
Б
Mr(CI2)=71
Mr(Br2)=160
Mr(I2)=254
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Verified answer
A
Mr(H2)=2
Mr(N2)=28
Mr(O2)=32
Mr(F2)=38
Б
Mr(CI2)=71
Mr(Br2)=160
Mr(I2)=254