From the ground state electronic configuration of the elements gi… - Vidyadip

MCQ

From the ground state electronic configuration of the elements given below, pick up the one with highest value of second ionisation energy

A
$1s^2\,2s^2\,2p^6\,3s^2$
✓
$1s^2\,2s^2\,2p^6\,3s^1$
C
$1s^2\,2s^2\,2p^6$
D
$1s^2\,2s^2\,2p^5$

✓

Answer

Correct option: B.

$1s^2\,2s^2\,2p^6\,3s^1$

b
$2^{nd}$ $I.E.$ of alkali Metal is max. because after loosing an $e{l^\Theta }$ it attains inert gas corifiguration.

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