Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Which represents alkali metals (i.e. 1 st group metals) based on (IE) 1 and (IE) 2 values (in kJ/mol)?
(IE) 1 (IE) 2
Text Solution
Verified by ExpertsThe correct answer is:
C
Removal of Ist electron is easier because of bigger size but 2nd electron is to be removed from ns 2 np 6 configuration i.e. stable noble gas configuration. So IE 2 > > IE 1 .
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