Q. Which has the highest molar heat of vaporization?

A) $HBr$
B) $HCl$
C) HF
D) HI
Explanation

(d)
Due to large size of iodine, in $HI$ strong van der Waals’ forces are present, Hence, it has highest molar heat of vaporization

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.