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Assertion (A) Helium has lowest boiling ...

Assertion (A) Helium has lowest boiling point (4.2 K).
Reason (R ) The forces that exist between helium atoms are weak disperson forces.

A

Both (A) and (R ) are correct and (R ) is the correct explanation of (A)

B

Both (A) and (R ) are correct but (R ) is not the correct explanation of (A)

C

(A) is correct but (R ) is false.

D

A is incorrect but (R ) is correct

Text Solution

Verified by Experts

The correct Answer is:
A
Helium has lowest boiling point (4.2 K) because the forces of attraction between He atoms are weak dispersion forces.
Thus, both assertion and reason are correct and reason (R ) is the correct explanation of assertion (A).
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