Question

the disturbance created by a source of sound in tje medium travels throuh tje medium and not tje particlrs of the medium. How?

Answer 1

because sound travels in the form of a wave where the energy gained by the particles travels not a single particle gaining energy and moving to the  listener.
 the disturbance created in the medium makes the particles to vibrate, when the particles vibrate the energy is transferred to the adjacent particles and so on and the sound reaches the listener.
in case of a longitudinal wave the disturbance moves in the form of compression and rarefactions, in case of a transverse wave it propagates in the form of crests and troughs.