Question

which of the following gases deviates most from ideal behavior?
a so₂
b ne
c ch₄
d h₂

Explanation:

Ideal gas behavior is best approximated by gases with small non - polar molecules and weak intermolecular forces. $SO_2$ is a polar molecule with relatively strong dipole - dipole forces and a larger molar mass compared to the others. Ne is a noble gas with weak London dispersion forces. $CH_4$ is non - polar and has weak London dispersion forces. $H_2$ is non - polar and has very weak London dispersion forces. The stronger the intermolecular forces and the larger the size of the molecule, the more it deviates from ideal behavior.

Answer:

A. $SO_2$