Chemistry-Coordination Number
NEET Chemistry Coordination Number Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 12
Assertion (A): The coordination number of a central metal atom is determined by the number of sigma bonds formed by ligands. | Reason (R): Pi bonds between ligands and the central metal atom do not contribute to the coordination number.
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.
Correct Answer
Option A
Detailed Explanation
The coordination number is determined by sigma bonds only, and pi bonds are not counted, as stated in Chunk 3 of the NCERT context.
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