1.
V II IV II III II II II I II
N2O5 NO2 N2O3 NO N2O
2.
Na2S Al2S3 H2S SO2 SO3 PbS2
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Answers & Comments
1.
V II IV II III II II II I II
N2O5 NO2 N2O3 NO N2O
2.
Na2S Al2S3 H2S SO2 SO3 PbS2