Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Identify the correct set of 
ion. (hybridisation of 
, type of complex, number of unpaired electrons in the complex ion respectively)
A
, inner orbital complex, zero B
, outer orbital complex, three C
, inner orbital complex, two D
, outer orbital complex, zero
Text Solution
Verified by ExpertsThe correct answer is:
A
in 
is in +3 state as 
is a neutral ligand. Since there are a total of six ligands, the hybridization state will be either 
or 
. Since 
is a strong-field ligand, it pairs the 
electrons and two of the 
ligands donate their electron pairs into the inner d-orbitals (3d). Thus, the complex is an inner-orbital complex with 
hybridization and zero unpaired electrons.
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