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In the following, the element with the highest ionisation energy is
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The correct answer is:
$[\mathrm{Ne}] 3 s^{2}, 3 p^{3}$
The element [Ne] $3 s^{2} 3 p^{3}$ have half-filled $p$-orbital.
As a result, it is more stable.
$\therefore$ The ionisation energy is highest for this element.
As a result, it is more stable.
$\therefore$ The ionisation energy is highest for this element.
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