Among the following options, the correct trend in the electron gain enthalpy is

Which of the following statements regarding electron affinity is correct?

Which of the following atoms should have the highest $1^{st}$ electron affinity?

Knowing the electron gain enthalpy values for $O \rightarrow O^{-}$ and $O \rightarrow O^{2-}$ as $-141 \ kJ \ mol^{-1}$ and $702 \ kJ \ mol^{-1}$ respectively,how can you account for the formation of a large number of oxides having $O^{2-}$ species and not $O^{-}$?
(Hint: Consider lattice energy factor in the formation of compounds).

The correct order of electron gain enthalpies of $Cl$,$F$,$Te$,and $Po$ is .....

Which element has maximum electron affinity?