Who discovered the neutral charge of an atom known as neutron?

Who discovered the center of an atom known as nucleus which is a positively charged using the Gold Foil Experiment?

He believed that all matter in the universe are made up of indivisible units known as 'atomos'.

He gave us the early idea about compound. According to him compounds are made up of two or more atoms of the same or different elements.

He was the first one who arranged elements in periodic table based on increasing order of atomic weight

He was the latest one who arranged elements in periodic table based on increasing order of atomic number or number of proton.

He was the first one who discovered radioactivity in some elements.

He was the first one who measured the charge of one electron.

He discovered isotopes of different elements proving that one element may have different atoms.

He proposed the planetary model of an atom believing that electrons occupy orbits around the nucleus that corresponds to their energy level.

He believed in the so called Uncertainty Principle of quantum theory in which according to him electrons do not follow specific orbits around the nucleus, instead they are scattered in different energy level.

What model of an atom did Schrodinger and Heisenberg propose?

Who discovered the positively charge of an atom known as proton?