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A helium atom is two times heavier than ...

A helium atom is two times heavier than a hydrogen molecule. At `298 K`, the average kinetic energy of a helium atom is

A

two times that of hydrogen molecule

B

Same as that of the hydrogen molecule

C

four times that of a hydrogen molecule

D

half that of a hydrogen molecule

Text Solution

Verified by Experts

The correct Answer is:
B
The average kinetic enegy of an atom is given as `(3)/(2)kT`.
`:.` It does not depend on mass of the atom.
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