Chemistry-Oxidation Number
NEET Chemistry Oxidation Number Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 11
Assertion (A): In a polyatomic ion, the sum of the oxidation numbers of all atoms is equal to the charge on the ion.
Reason (R): In the carbonate ion (CO3)2-, the sum of the oxidation numbers of three oxygen atoms and one carbon atom is -2.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
Both the assertion and reason are true, and the reason correctly explains that the sum of oxidation numbers in the carbonate ion equals the ion's charge, consistent with the rule for polyatomic ions.
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