Home Chemistry Classification of Elements and Periodicity JEE (Main) / AIEEE Problems (Previous Year) When the first electron gain enthalpy ( Δ eg…
Chemistry Classification of Elements and Periodicity JEE (Main) / AIEEE Problems (Previous Year) Single Correct MCQ
Published on: August 13, 2026

When the first electron gain enthalpy ( Δ eg H) of oxygen is –141 kJ/mol, its second electron gain enthalpy is :

A
almost the same as that of the first
B
negative, but less negative than the first
C
a more negative value than the first
D
a positive value

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The correct answer is:
D

Second electron gain enthalpy of oxygen is a positive value.

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