The p-Block Elements

The p-Block Elements

Question

Which one has the highest boiling point?

  • He

  • Ne

  • Kr

  • Xe

Answer

D.

Xe

As, we move down the group of noble gases molecular mass increases by which dipole produced for a moment and hence London forces increases from He to Xe. Therefore more amount of energy is required to break these forces, thus boiling point also increases from He to Xe.

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