Atomic structure

Rutherford nuclear model of an atom 

Rutherford allowed a narrow beam of particles to fall on the very thin gold foil the thin gold foil fell on the very had circular arrangement of a fluorescent zinc sulfide screen around it. Whenever particles struck the screens tiny flash of light was proud at that point

It was observed that 

Most of the particles passed through the foil undefeated 

A small fraction of the particles were deflected by a small angle 

A very few particles bounced back 

Based on the above observation, Rutherford drew some conclusions regarding the structure of the atom 

a) most of the space in the atom is empty as most of the particles passed through the foil undefeated.

b) the positives charge is concentrated very small volume which is responsible for the deflection of a particles

Based on observation and the conclusion of a ray scattering experiment, Rutherford proposed the nuclear more of an atom according to this

model 

The positive charge and most of the mass of the atom were densely concentrated in an extremely small region. They're a very small portion of the atom is called nucleus

The nucles are surrounded by the electron that moves around the nucleus at a very high speed in a circular path called the orbit. Thus rutherfordrce model of the atom resembles the role of the sun and the electrons that of revolving planets 

Electron and the nucleus are held together by the electrostatic force of attraction