Explain Rutherford atomic model

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 In his study on atoms ,Rutherford proposed Rutherford atomic model( Rutherford planetary model of an atom). The following are the salient features his model:

(I) Every atom consist of tiny central core called nucleus which is entirely positively charged and it is a zone in which almost whole mass of the atom is concentrated.

(II) Most of an atom is empty space

(III) In free space around the nucleus there are electrons which move in orbits just like the planets around the sun and the centripetal force  needed for orbital motion of electrons is provided by electrostatic forces due to positively charged nucleus.

(III) An atom as a whole is electrically neutral hence the total posively charge of the nucleus is exactly equal to total negative charge of all the electrons orbiting in an atom

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