Why do real gases not behave exactly like ideal gases?

The term ‘real gas’ usually refers to a gas that does not behave like an ideal gas. Their behaviour can be explained by the interactions between the gaseous molecules. These intermolecular interactions between the gas particles is the reason why real gases do not adhere to the ideal gas law.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

b) nuclear ive learned that in a pedtrodic table