Calculate the oxidation state of N atom in each compound and arrange them to an increasing value
The rules for oxidation states are as follows:
A. General Rules:
1. For an atom in its elemental form (Zn, Cl2, C(graphite), etc.) O.S. = 0
2. For an ion (Li+, Al3+, etc.) O.S. = charge
Place the following compounds in order of increasing oxidation state of nitrogen:
NH2OH N2H4 HNO2 NH+4 HNO3
(A) HNO2 < NH2OH < N2H4 < HNO3 < NH+4
(B) HNO3 < HNO2 < NH2OH < N2H4 < NH+4
(C) NH+4 < N2H4 < NH2OH < HNO2 < HNO3
(D) NH2OH < N2H4 < HNO2 < NH+4 < HNO3
(E) N2H4 < NH+4 < HNO3 < NH2OH < HNO2
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