Coordination Compounds: Chelate effect MCQ

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Chelate effectMediumQuestion 740009

Question

Ethylenediamine (en) is a bidentate ligand because:

A
It has two donor N atoms
Correct
B
It is small
C
It forms ionic bonds
D
N is electronegative

Correct answer

It has two donor N atoms

Explanation

Ethylenediamine (H₂N−CH₂−CH₂−NH₂) has two −NH₂ groups, each donating a lone pair to the metal. It forms a 5-membered chelate ring, making it bidentate.

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