Chemistry - Complete P-block Question with Solution | TestHub

The N₂ molecule is inert due to the presence of a strong triple bond ($N\equiv N$), which results in a very high bond dissociation energy (945 kJ/mol). This makes it difficult to break the bond and initiate reactions. In contrast, Cl₂ has a weaker single bond (Cl-Cl) with a lower bond dissociation energy (242 kJ/mol), making it more reactive.