(a) What is the nucleus of an atom and what is the nature of charge on it?(b) Name the scientist who discovered the nucleus of atom.
(a) The nucleus is a very dense region at the center of an atom, consisting of protons and neutrons.
The charge of the nucleus is positive as it contains protons that are positively charged and neutrons that are neutral.
(b) Ernest Rutherford discovered the nucleus of an atom.
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