Question

bond dissociation enthalpy of F2 is less
them cl2 why ?​

Answer 1

Answer:

The size of fluorine is smaller than Chlorine and bromine. Due to which there is higher electron density on Fluorine. ... Due to this repulsion between the electrons both the atoms want to move apart. Hence the bond can be cleaved easily and the bond dissociation energy is less

Answer 2

Explanation:

ANSWER

Bond dissociation energy of F

2 is less than Cl 2 because F has high electronegativity due to which F−F repels each other having lesser bond dissociation enthalpy than Cl 2 where Cl is less electronegative than F.