Some Basic Concepts Of Chemistry

Which of the following contain the same number of atoms?

(Given : Molar mass in $\mathrm{g} \mathrm{mol}^{-1}$ of $\mathrm{H}, \mathrm{He}, \mathrm{O}$ and S are 1, 4, 16 and 32 respectively)

A. 2 g of $\mathrm{O}_2$ gas

B. 4 g of $\mathrm{SO}_2$ gas

C. 1400 mL of $\mathrm{O}_2$ at STP

D. $0.05 \mathrm{~L}$ of He at STP

E. $ 0.0625 \mathrm{~mol}$ of $\mathrm{H}_2$ gas

Choose the correct answer from the options given below :