Answer:
there are no valence electrons left over, so the molecule has four bond pairs and no lone pairs.
Explanation:
The answer to this question is theory
There is two different types but i’ll just do both meanings just incase.
Graham's Law of Diffusion: the rate of diffusion of one gas through another is inversely proportional to the square root of the density of the gas.
Graham's Law of Effusion: the rate of effusion of a gas is inversely proportional to the square root of the density of the gas.
hopes this helps..!
It is called Condensation
