Published by:
CGP EDU Academic Team
Published on: August 13, 2026
is blue in colour while 
is colourless due to
A
Presence of strong filed ligand in 
B
Due to absence of water (ligand), d- d transitions are not possible in 
C
Anhydrous 
undergoes d- d transition due to crystal field splitting
undergoes d- d transition due to crystal field splitting
D
Colour is lost due to loss of unpaired electrons.
Text Solution
Verified by ExpertsThe correct answer is:
B
In 
water acts as ligand as ligand and as a result it causes crystal field splitting making d –d transitions possible in 
. Hence, it is coloured. In anhydrous 
due to absence of ligand crystal field splitting is not possible hence no colour is observed.
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