Sketch Rutherford's atomic model. Why Rutherford's model of the atom is called the planetary model?
The Rutherford model described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents called electrons circulate at some distance.
The model resemble much like our solar system in which sun in centre like nucleus and planets revolving around the sun in fixed orbits like electrons. Therefore it is called planetary model.
The Figure below is a sketch of Rutherford’s atomic model.