Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Which of these statements about 
is true?
A
has no unpaired electrons and will be in a low-spin configuration. B
has four unpaired electrons and will be in a low-spin configuration. C
has four unpaired electrons and will be in a high-spin configuration. D
has no unpaired electrons and will be in a high-spin configuration.
Text Solution
Verified by ExpertsThe correct answer is:
A
is a strong field ligand and as it approaches the metal ion, the electrons must pair up.
The splitting of the 
-orbitals into two sets of orbitals in an octahedral 
may be represented as
Here, for 
ions, three electrons first enter orbitals with parallel spin then the remaining may pair up in 
orbital giving rise to low spin complex (strong ligand) field. 
has no unpaired electron and will be in a low spin configuration.
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