Question

The inter atomic distance of atoms in a gas at ntp is of the order of

Answer 1

The distance in between molecules in a dynamic system like gas is a probability distribution.

If air is considered as an ideal gas, then under standard temperature and pressure (STP) conditions, the volume occupied by 1 mole of gas can be calculated using the formula

V = nRT/P = 1 x R x 298K/1 atm = 0.0245 m3

Therefore, for a single molecule, V/Na = 4 x 10 -26 m3

Thus, with the cube root order, the space in between the molecules should be around 3 nm.

However, this is just a probability and there are much more attractive interactions in between molecules.