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Q25 (CDS-II/2018) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic chemical principles Answer Verified

Which one of the following nitrogen oxides has the highest oxidation state of nitrogen?

A) NO
B) NO₂
C) N₂O
D) N₂O₅

Result
Your answer: —  ·  Correct: D

Explanation

Nitrogen exhibits a wide range of oxidation states in its oxides, typically ranging from +1 to +5. In Nitrous oxide (N2O), nitrogen has an oxidation state of +1. In Nitric oxide (NO), the oxidation state is +2. In Nitrogen dioxide (NO2), nitrogen is in the +4 oxidation state. The highest oxidation state for nitrogen in its oxides is +5, which is found in Dinitrogen pentoxide (N2O5). In N2O5, the five oxygen atoms (each -2) contribute a total charge of -10, requiring the two nitrogen atoms to provide +10 to maintain neutrality, resulting in +5 per nitrogen atom. Although the option is listed as 'N2Os', it is a clear typographical representation of N2O5, which represents the maximum oxidation state for nitrogen.

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