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

Question

Assertion (A) Helium has lowest boiling point (4.2 K). Reason (R) The forces that exist between helium atoms are weak dispersion forces., Both (A) and (R) are correct and (R) is the correct explanation of $(A)$., Both $(A)$ and $(R)$ are correct but $(R)$ is not the correct explanation of (A)., $(A)$ is correct but $(R)$ is incorrect., (A) is incorrect but $(R)$ is correct

MARKS App · Accepted Answer

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

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