Equal volume of different gases under same condition of temperature and pressure contain the same number of particles. The above statement is of:

Explanation

The correct answer is Avogadro's Law. This fundamental principle states that equal volumes of gases, at the same temperature and pressure, will contain an equal number of molecules. This is pivotal for understanding gas behavior in chemistry and physics.Graham's Law is concerned with the diffusion and effusion rates of gases, which depend on molecular weight, not volume and particle number.Dalton's Law explains the pressure contributions of individual gases in a mixture, but does not relate to volume and molecule count.Hund's Rule pertains to electron occupation in atomic orbitals, which is irrelevant to gas laws and molecular volume relationships.