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:

Classification of Elements and Periodicity in Properties: JEE Main 2022 Chemistry question

JEE Main 2022 · 29 Jul, Morning shift · Q1615

JEE Main 202229 Jul, Morning shiftChemistryEasyClassification of Elements and Periodicity in Properties127× since 2002

The first ionization enthalpy of Na, Mg and Si, respectively, are : 496, 737 and

786 \mathrm{~kJ} \mathrm{~mol}^{-1}

. The first ionization enthalpy (

\mathrm{kJ} \,\mathrm{mol}^{-1}

) of

\mathrm{Al}

is :

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