QJEEM21Chbfd2: JEE Main 2021 Chemistry - Class 11 JEEM21Chbfd2 Solution: The correct order of first ionisation enthalpy is :

Question

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The correct order of first ionisation enthalpy is :

Accepted Answer

\begin{matrix} M g & A l & P & S \to I E \end{matrix}

order

\Rightarrow

Al < Mg < S < P

Valence [N_e] :

\begin{matrix} \overset{M g}{3 s^{2}} & \overset{A l}{3 s^{2} 3 P^{1}} & \overset{P}{3 s^{2} 3 P^{3}} & \overset{S}{3 s^{2} 3 P^{4}} \end{matrix}

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