Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Which statement regarding isoelectronic species is not correct?
A
The cation with the greater positive charge will have a smaller radius.
B
The anion with the greater negative charge will have the larger radius.
C
The cation 
will have larger radius than that of cation 
.
will have larger radius than that of cation .
D
The anion 
will have smaller radius than that of anion 
.
will have smaller radius than that of anion .
Text Solution
Verified by ExpertsThe correct answer is:
C
Among isoelectronic species, the cation with the greater positive charge will have a smaller radius because of the greater attraction of the electrons to the nucleus. Hence, the cation 
will have smaller radius than that of cation 
since 
acquires more positive charge on it.
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