Why do noble gases have positive electron gain enthalpy?

Question

Why do noble gases have positive electron gain enthalpy? (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.

Tardigrade Admin · Accepted Answer

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

Q. Why do noble gases have positive electron gain enthalpy?

It is difficult to add an electron due to small size.

It is difficult to add an electron due to high electronegativity.

It is difficult to add an electron due to stable configuration.

It is difficult to add an electron due to high electron affinity.

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