How did the idea of sub-atomic particles evolve?

Explanation

1) According to Dalton, atom is indivisible.
2) But Michael Faraday's experiments on electrolysis proved that atoms were acquiring negative charge during electrolysis.
3) This is contradication of Dalton's theory.
4) This lead to an ideal that there must exist some tiny particles in atom which are responsible for atom to behave sometimes as charged particles.
5) As atom is considered as electrically neutral, it probably had equal number of positive and negative constituents to maintain electrical neutrality.
6) This gave scope to think above sub-atomic particles.