Which one of the following elements has the highest negative value for its electron gain enthalpy?

Question

Which one of the following elements has the highest negative value for its electron gain enthalpy? (A)  Se  (B)  O  (C)  S  (D)  Te

Tardigrade Admin · Accepted Answer

The elements of group 16 have relatively high negative electron gain enthalpy values which decrease down the group from S to Po. Oxygen has lowest negative electron gain enthalpy due to its small size which makes electron density high and repels the incoming electron

Q. Which one of the following elements has the highest negative value for its electron gain enthalpy?

$S e$

$O$

$S$

$T e$

The elements of group $16$ have relatively high negative electron gain enthalpy values which decrease down the group from $S$ to Po. Oxygen has lowest negative electron gain enthalpy due to its small size which makes electron density high and repels the incoming electron