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Chemistry-Coordination Number

NEET Chemistry Coordination Number Assertion Reason Question

Type: Assertion Reason-assertion-Hard-Class 12

Assertion (A): The coordination number of a central metal atom is determined by the number of ligand donor atoms to which the metal is directly bonded.

Reason (R): In the complex [Fe(CN)6]4-, the coordination number of iron is 4 because it can only accommodate four cyanide ions.

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 C

Detailed Explanation

The coordination number is determined by the number of ligand donor atoms directly bonded to the metal. In [Fe(CN)6]4-, the coordination number of iron is 6 because there are six cyanide ions bonded to it.

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