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What is the value of electron gain enthalpy of Na^+ if IE1 of Na = 5.1 eV?

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What is the value of electron gain enthalpy of Na+ if IE1 of Na = 5.1 eV?

(a) -5.1 eV

(b) -10.2 eV

(c) +2.55 eV

(d) +10.2 eV

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1 Answer

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The correct option is: (a) -5.1 eV

Explanation:

Na → Na+ + e- ; ΔH = 5.1 eV

Na+ + e- → Na; ΔH = -5.1 eV

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