Which one has the highest boiling point ?

Question:

Which one has the highest boiling point ? 

  1. Kr

  2. Xe

  3. He

  4. Ne


Correct Option: , 2

Solution:

Boiling point order: $\mathrm{He}<\mathrm{Ne}<\mathrm{Ar}<\mathrm{Kr}<\mathrm{Xe}$

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