In which of the following pairs does nitrogen exibit a valency of +1 and -1 respectively (A) nitrous oxide and nitric

In which of the following pairs does nitrogen exibit a valency of +1 and -1 respectively
(A) nitrous oxide and nitric oxide
(B) nitrous oxide and hydroxylamine
(C) hydroxylamine and hydrazine
(D) nitric oxide and hydroxylamine

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