In a mole of water vapour at $STP$,the volume actually occupied or taken by the molecules (i.e.,Avogadro's No. $\times$ Volume of one molecule) is
- AZero
- BLess than $1\%$ of $22.4 \,L$
- CAbout $10\%$ of the volume of container
- D$1\%$ to $2\%$ of $22.4 \,L$
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