Published by:
CGP EDU Academic Team
Published on: August 12, 2026
The maximum tendency to form the gaseous unipositive ion is for the element with configuration.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Ionisation energy increase from left to right with increase in atomic number in a period but removal of electron from 
-orbital is easier than that from 
-orbital because of less penetrating power of p-orbital. Also the removal of one electron from is the most easiest as it will lead to stable noble gas configuration. Thus, it will have maximum, tendency to form the positive ion.
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