The number of chlorine atoms in 20 mL of chlorine gas (Cl₂) at STP is____×10²¹(Round off to the nearest integer).

[Assume chlorine is an ideal gas at STP

\(\left.\mathrm{R}=0.083\mathrm{L}\mathrm{bar}{\mathrm{mol}}^{-1}{\mathrm{K}}^{-1},{\mathrm{N}}_{\mathrm{A}}=6.023\times {10}^{23}\right]\)

[JEE Main 2021, 17 Mar (Shift 2)]

Question

The number of chlorine atoms in 20 mL of chlorine gas (Cl₂) at STP is____×10²¹(Round off to the nearest integer).

[Assume chlorine is an ideal gas at STP

\(\left.\mathrm{R}=0.083\mathrm{L}\mathrm{bar}{\mathrm{mol}}^{-1}{\mathrm{K}}^{-1},{\mathrm{N}}_{\mathrm{A}}=6.023\times {10}^{23}\right]\)

[JEE Main 2021, 17 Mar (Shift 2)]

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