Published by:
CGP EDU Academic Team
Published on: August 11, 2026
Although +3 is the characteristic oxidation state for lanthanoids but cerium also shows +4
oxidation state because:
A
It has variable ionisation enthalpy
B
It has a tendency to attain noble gas configuration
C
It has a tendency to attain 
configuration
configuration
D
It resembles 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(b,c) Electronic configuration of 
. Therefore, electronic configuration of 
. Thus, it has a tendency to attain noble gas configuration and attain 
. configuration.
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