Question
Which element having following electronic configurations has minimum ionization potential
✓
Answer
c
(c) $1{s^2}2{s^2}2{p^6}3{s^1}$.
(c) $1{s^2}2{s^2}2{p^6}3{s^1}$.
It belongs to $IA$ group which has least ionization potential and it decreases down the group
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