Question

Which of the following is correct statement?

• A. $F_{2}$ has higher dissociation energy than $Cl_{2}$
• B. F has higher electron affinity than Cl
• C. HF is stronger acid than HCl
• D. Boiling point increases down the group in halogens

Answer 1

Answer: (D)

Here only statement D is correct and rest are incorrect as
$A.$ bond dissociation energy of $F_{2}$ is less than that of $Cl_{2}$
$B.$ Cl has higher E.A. than fluorine.
$C.$ HF is weaker acid than HCl, due to higher bond energy.
$D.$ On moving down the group boiling point increases as with the increase of molecular weight van der Waal's force increases.