Question

Bond dissociation energy is $F_2 > Cl_2$. $Cl_2$ has more electronic repulsion than $F_2$.

• A. If both assertion and reason are true and reason is the correct explanation of assertion.
• B. If both assertion and reason are true but reason is not the correct explanation of assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false.

Answer 1

Answer: (D)

If both assertion and reason are false.

Answer 2

Bond dissociation energy is $F _{2}< Cl _{2}$ because of relatively large electron-electron repulsion among the lone pairs in $F _{2}$ molecule where they are much closer to each other than in $Cl _{2}$