Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Among 
, 
, Cu 2 Cl 2 and 
the colourless species are:
A
and 
B
and 
C
and Cu 2 Cl 2
D
and Cu 2 Cl 2
Text Solution
Verified by ExpertsThe correct answer is:
D
Ti 4+ , [Ar] 18 3d 0 4s 0 ; as there is no unpaired electron, so no d-d transition occurs.
Cu + , [Ar] 18 3d 10 4s 0 ; All electrons paired, so there is no unpaired electron for d-d transition.
Hence both complexes are colourless.
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