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QJEEM22Chb7d0: JEE Main 2022 Chemistry - Class 11 JEEM22Chb7d0 Solution: The first ionization enthalpy of Na, Mg and Si, respectively,…

The first ionization enthalpy of Na, Mg and Si, respectively, are : 496, 737 and $786 kJ {mol}^{- 1}$ . The first ionization enthalpy ( $kJ {mol}^{- 1}$ ) of $Al$ is :

Multiple Choice Options

A 487
B 768
C 577
D 856

Step-by-Step Verified Solution

I.E.

\mathrm{Na}&lt;\mathrm{Al}&lt;\mathrm{Mg}&lt;\mathrm{Si}

\because 496&lt;

I.E. (Al)

&lt;737

Option (C), matches the condition

i.e. I.E.

(\mathrm{Al})=577 \mathrm{~kJ} \mathrm{~mol}^{-1}

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