Hi, I've got the following problem:
Calculate the spacing between atoms of an ideal gas at a temperature of 273K and a pressure of 1atm.
Mean free path equation:
ʎ = 1 / 4(pi)(n)(σ²)
The Attempt at a Solution
I first used the ideal gas equation PV =nRT to get n/V and thus I got 2.67 x 10^25 particles/m^3.
But I dont know how I can find the radius of the atom. Am I using the wrong equation to get the spacing between atoms?