Question

Assertion (A) $X-X^{\prime }$ bond in interhalogens is weaker than $X-X$ bond in halogens.
Reason (R) Interhalogen compounds are more reactive than halogens (except fluorine).

• A. Both $A$ and $R$ are correct; $R$ is the correct explanation of $A$.
• B. Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$.
• C. $A$ is correct; $R$ is incorrect.
• D. $R$ is correct; $A$ is incorrect.

Answer 1

Answer: (B)

Interhalogen compounds are more reactive than halogens (except fluorine). This is because $X-X^{\prime }$ bond in interhalogens is weaker than $X-X$ bond.
All these undergo hydrolysis giving halide ion derived from the smaller halogen and a hypohalite (when $X{X}^{\prime }$ ), halite (when $X{X}_3^{\prime }$ ), halate (when $X{X}_5^{\prime }$ ) and perhalate (when $X{X}_7^{\prime }$ ) anion derived from the larger halogen.
$X{X}^{\prime }+H_{2}O⟶H{X}^{\prime }+HOX$