Speed of sound in a gas medium is the least why?

The speed of sound in a gas is generally the least compared to liquids and solids because gas molecules are more widely spaced and move less freely. This means that sound waves, which are pressure waves, have to rely on molecular collisions to propagate, and the lower density results in fewer collisions. Additionally, the speed of sound in a medium is influenced by its density and elasticity; gases typically have lower elasticity compared to liquids and solids, further slowing sound transmission.