For which of the following elements will gaining an electron be the most exothermic process?

For which of the following elements will gaining an electron be the most exothermic ?

A.) Al
B.) Si
C.) Mg
D.) S

Answer

electron gain enthalpy become more negative as we move across a period in given option all are of same period
so, it become more negative as we move from left to right
so, electron gain enthalpy is most negative for S if electron gain enthalpy is negative then reaction is exothermic
so,
gaining an electron be the most exothermic is for S

Answer : option D

Leave a Comment