What is the value of electron gain enthalpy of Na+if I.E. of Na=5.1eV?

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−5.1eV

−10.2eV

+2.55eV

+10.2eV

answer is A.

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Detailed Solution

Given : Na→Na++e¯;IE1, i.e., ΔH=+5.1eV∴Na++e¯=Na;e¯− gain enthalpy, ΔH=−5.1eV

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