p -Block elements - ll — Chemistry STD 12 Science — Question
CBSE BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
Which one has the highest boiling point ?
A
$Kr$
✓
$Xe$
C
$He$
D
$Ne$
✓
Answer
Correct option: B.
$Xe$
b As we move down the group, the melting and boiling points show a regular increase due to corresponding increase in the magnitude of their van der waal forces of attraction as the size of the atom increases.
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