Which of the following noble gases has the maximum positive electron gain enthalpy?

Options

A. It is difficult to add an electron due to small size.
B. It is difficult to add an electron due to high electronegativity.
C. It is difficult to add an electron due to stable configuration.
D. It is difficult to add an electron due to high electron affinity.

Answer

C

Explanation

Due to stable configuration they do not accept an electron and hence they have positive electron gain enthalpy.