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Question

Chemistry Question on coordination compounds

COCO is a stronger ligand than ClCl^- because

A

COCO is a neutral molecule

B

COCO has π\pi-bonds.

C

COCO is poisonous.

D

COCO is more reactive.

Answer

COCO has π\pi-bonds.

Explanation

Solution

CO is a strong ligand due to the presence of π\pi -bonds, available for donating π\pi -electrons to the metal-ion/atom. While, ClCl ^{-} has pair of electrons but are less available for donation (due to more delocalised nature of π\pi -electrons).