Section B The order of energy absorbed which is responsible…

Biology NEET Previous Year Question Paper NEET 2022 Previous Year Question Paper Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 21, 2026

Section B

The order of energy absorbed which is responsible for the color of complexes

([Ni(H 2 O) 2 (en) 2 ) 2+ > > >

[Ni(H 2 O) 4 (en)] 2+ and > > >

[Ni(en) 3 ] 2+ is > >

Text Solution

Verified by Experts

The correct answer is:

Stronger the field strength of ligand, higher will be the energy absorbed by the complex.

Ethylene diamine (en) is a strong field ligand than 'H 2 O' according to spectrochemical series.

Hence, the correct order of energy absorbed is:

[Ni(en) 3 ] 2+ > [Ni(H 2 O) 2 (en) 2 ] 2+ > [Ni(H 2 O) 4 (en)] 2+

i.e. > >

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