Question

Molecular size of $ICl$ and $Br _{2}$ is nearly the same, but boiling point of $ICl$ is about $40^{\circ} C$ higher than $Br _{2}$. This might be due to

• A. I-Cl bond is stronger than Br - Br bond
• B. IE of I $< $ IE of Br
• C. ICl is polar whereas $Br _{2}$ is non-polar
• D. The size of I $ >$ size of Br.

Answer 1

Answer: (C)

Polarity in a molecule gives rise to an increase in force of attraction among molecules and, thus, have higher boiling point.