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On the basis of alpha particle scattering experiment, Rutherford proposed the nuclear model of an atom. According to this model:

A) An atom consists of a positively charged sphere and electrons are embedded in that sphere

B) An atom consists of a positively charged sphere and mass is evenly spread over the atom

C) An atom consists of tiny positively charged nucleus surrounded by negatively charged electrons

D) An atom consists of very tiny particles concentrated in the nucleus

E) None of these