The energy evolved is highest for which of the following reactions

Options

A. `F + e^(-) to F^(-)`
B. `Cl + e^(-) to Cl^(-)`
C. `S + 2e^(-) to S^(2+)`
D. `O + 2e^(-) to O^(2-)`

Answer

B

Explanation

Due to high electron affinity of Cl the highest energy is evolved.