Amongst the following elements (whose electronic configurations are given below), the one having the highest ionisation energy is

$[N e] 3 s^{2} 3 p^{1}$

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$[N e] 3 s^{2} 3 p^{3}$

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$[N e] 3 s^{2} 3 p^{2}$

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$[A r] 3 d^{10} 4 s^{2} 4 p^{3}$

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Solution

The correct option is B
$[N e] 3 s^{2} 3 p^{3}$

$[N e] 3 s^{2} 3 p^{3}$ has highest ionisation energy, periodic trend.

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Question 22

Amongst the following elements whose electronic configuration are given below, the one having the highest ionisation enthaply is

(a) $[N e] 3 s^{2} 3 p^{1}$

(b) $[N e] 3 s^{2} 3 p^{3}$

(d) $[A r] 3 d^{10} 4 s^{2} 4 p^{3}$

Amongst the elements with following electronic configurations, which one may have the highest ionisation energy? [CBSE AIPMT 2009]

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