Rutherford’s -particle scattering experiment eventually led to the conclusion that
a)	Mass and energy are related
b)	Electrons occupy space around the nucleus
c)	Neutrons are buried deep in the nucleus
d)	The point of impact with matter can be precise determined

(b)

According to Rutherford’s model of atom, an atom consists of a positively charged heavy part called nucleus where most of the mass of the atom is concentrated. Protons and neutrons are present in the nucleus

Size of the nucleus is very small compared to the size of the atom

Around the nucleus, there is extranuclear part in which there are electrons

Electrons revolve around the nucleus in circular orbits, like planets around the sun, and they are called plantary electrons