Chemistry · Classification of Elements and Periodicity in Properties
हिन्दीWhich of the following elements has the most negative electron gain enthalpy?
Correct answer · Option 1
Chlorine (Cl)
Explanation
Chlorine has the most negative electron gain enthalpy (-349 kJ mol^-1) due to less electron-electron repulsion in the larger 3p-orbital compared to fluorine's 2p-orbital.