(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 an atom.
a)Protons and neutrons make up the nucleus of the atom, a dense and positively charged core. It is present at the centre of the atom. It is positively charged due to presence of protons.
Rutherford discovered the nucleus of an atom with the gold foil experiment.