Low oxidation states are found in transition elements when …

Chemistry D and F - Block Elements Mix Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

Low oxidation states are found in transition elements when a complex compound has :

ligands capable of π acceptor character.

ligands capable of σ donor character.

ligands capable of π acceptor character as well as σ donor character.

ligands incapable of π acceptor character as well as σ donar character.

Text Solution

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The correct answer is:

[Ni(CO) 4 ] ; Ni is in zero oxidation state. CO acts as σ doner as well as π acceptor.

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