Question

who founded atom

Answer 1

do u mean who discovered atom?

The idea that matter consists of minimum units, i.e. atoms, was proposed by an ancient Greek philosopher, Demokritos (Ancient Greece, ~ B.C. 500).

Answer 2

In the 5th cent. B.C. the Greek philosophers Democritus and Leucippus proposed that matter was made up of tiny, indivisible particles they called atom, or in Greek "a-tomos". The reason why they assumed this is because nothing can come from nothing. Around 1803, John Dalton (1766-1844) developed the first useful atomic theory of matter. He imagined the atom as a sphere full of an electrically positive substance mixed with negative electron. Then in 1897, Thompson discovered the first component part of the atom: the electron, a particle with a negative electric charge

Answer 3

This dates back to the early BCs. Democritus. But it was only recently until Dalton came up with his model to explain some science things, later proven wrong again.