Chemistry-Oxidation Number
NEET Chemistry Oxidation Number MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Which of the following statements about oxidation numbers is correct?
A
The oxidation number of an atom in a compound must always be zero.
B
The sum of oxidation numbers in a neutral compound is zero.
C
Non-metallic elements can only have negative oxidation numbers.
D
In a polyatomic ion, the oxidation numbers of atoms must equal the number of atoms present.
Correct Answer
Option B
Detailed Explanation
The sum of oxidation numbers in a neutral compound must indeed equal zero, while in polyatomic ions, the sum must equal the charge of the ion. This is highlighted in the context that the oxidation number in a compound must balance to zero.
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