Among solids, liquids and gases, in which medium is the velocity of sound the maximum and in which is the velocity of sound the minimum?

The speed of sound is highest in solid. The speed of sound depends on the density of the medium through which it is travelling. The higher the density of the medium, the faster is the propagation of sound. Since density of solids is higher than that of liquids and gasees, so sound travels faster in solids. Also, the molecules in the solid medium are closely packed together than in liquids or gases, allowing sound waves to travel more quickly through it.
 
Speed of sound is minimum in gases as the particles are lossely packed . So sound will travel slower