Question

Which one has the highest boiling point?

• A. ${{H}_{2}}$
• B. $Xe$
• C. $C{{H}_{4}}$
• D. $He$

Answer 1

Answer: (B)

$Xe$

Answer 2

Boiling point $\propto$ vander Waals force vander Waals force oc atomic mass (or molecular mass) $\because$ Atomic mass of Xe is highest among. ${{\text{H}}_{\text{2}}}\text{,He,}\,\text{C}{{\text{H}}_{\text{4}}}\text{,}\,\text{Xe}$ $\therefore$ Boiling point of Xe is highest.