Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R).
Assertion(A): The metal carbon bond in metal carbonyls possesses both σ and π character.
Reason (R): The ligand to metal bond is a π bond and metal to ligand bond is a σ bond
In the light of the above statements, choose the correct answer from the options given below.

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Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are false.

(A) is true but (R) is false.

Both (A) and (R) are true but (R) is not the correct explanation of (A).

answer is C.

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Detailed Solution

Answer: (C) Assertion is true, Reason is false.

The M–CO bond has σ donation from CO to metal and π back-donation from metal to CO. The reason reverses this.

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