Q. Which of the following contains largest number of atoms

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A

$2$ moles of $H$

B

$8.22 \times 10^{24} H$ atoms

C

$18.0\, g$ of $H _{2}$

D

$10.0\,g$ of $ Cl _{2}}$

Solution:

$18\, g$ of $H _{2}=6.022 \times 10^{-23} \times 18$ atoms $=108.36 \times 10^{-23}$ atoms

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