Physics · UNITS AND MEASUREMENT

Why is the ratio of molar volume to atomic volume of a gas at STP extremely large (of the order of \( 10^4 \) to \( 10^5 \))?

A
Because molecules of a gas are very heavy
B
Because the average separation between gas molecules is much larger than the size of the molecules
C
Because intermolecular forces are attractive
D
Because temperature at STP is high

View Answer & Solution

Correct answer · Option B

Because the average separation between gas molecules is much larger than the size of the molecules

In a gas, molecules are widely separated and the average inter-molecular distance is much larger than the physical size of individual molecules.