MCQ
The oxidation state of nitrogen in NaNO3​ is:
  • A
    +3
  • B
    +5
  • C
    −4
  • D
    −5

Answer

  1. +5

Explanation:

The overall charge is zero (because it is not an ion). Since sodium is a 1A family member, the charge is +1.

The charge of oxygen is almost always -2.

Hence, 1 + OS of N + (3 × −2) = 0

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