What is the oxidation number of N in NO?
Answer and explanation
Correct answer: B. +4
- Step 1: The oxidation numbers in a neutral compound add up to zero (H is + 1, O is , K is + 1, Na is + 1, Cl in a metal chloride is ).
- Step 2: Solving for N gives + 4.
Answer
+4.
Why not the others: +5: the total of the oxidation numbers in the formula does not come to zero. +3: the other atoms' oxidation numbers are not balanced correctly. -4: the charges of the other elements are miscounted.
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