Сложить формулу за валентностью ПРОШУ СРОЧНО ПЖЖ
1.N(|V)O
2.N(||)O
3.BO
4.Cu O
5.Cr(|||)O
6.Cr(|V)O
7.NaO
8.P(|||)N
9.MgN(|||)​
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