First and second ionization enthalpies of lithium are 520 kJ mol ⁻¹ and 7297 kJ mol ⁻¹ respectively. Energy required to convert 3.5 mg lithium (g) into Li²⁺(g) [ Li(g)→ Li²⁺(g) ] is _ _ _ _ kJ mol ⁻¹. (nearest integer) [Molar mass of Li = 7 g mol ⁻¹ ]

Classification of Elements and Periodicity in Properties: JEE Main 2026 Chemistry question

JEE Main 2026 · 6 Apr, Morning shift · Q71

JEE Main 20266 Apr, Morning shiftChemistryMediumClassification of Elements and Periodicity in Properties127× since 2002

First and second ionization enthalpies of lithium are 520 kJ mol

^{-1}

and 7297 kJ mol

^{-1}

respectively. Energy required to convert 3.5 mg lithium (g) into

\mathrm{Li^{2+}(g)}

[\mathrm{Li(g)\to Li^{2+}(g)}]

is ________ kJ mol

^{-1}

. (nearest integer) [Molar mass of Li = 7 g mol

^{-1}

]

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2026 Classification of Elements and Periodicity in Properties Question with Solution (6 Apr Morning shift, Q71) | JEE Arc