Определите валентность химической формулы

Question

Определите валентность химической формулы

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Answer 1

N(II)O(II), N2(I)O(II), N(III)H3(I), N(IV)O2(II), N2(V)O5(II), N2(III)O3(II), H(I)N(IV)O(II), H(I)N(VI)O3(II)