Which molecule has the highest bond enthalpy among the halogens?
Cl₂ has a bond enthalpy of ~243 kJ/mol, higher than F₂ (159 kJ/mol), Br₂ (193 kJ/mol), or I₂ (151 kJ/mol) due to optimal bond strength.
Ref: NCERT Class 11 Chemistry > Chapter 4: Chemical Bonding and Molecular Structure > Topic: Ionic Bonding - Lattice Enthalpy and Properties of Ionic Compounds