Who is the first scientist discover the atom?

Answer 1

Democritus a greek philosopher was the first to propose that every matter are made up of tiny particles called atom or in greek "a-timos"

Answer 2

The concept of the atom dates back to ancient Greece, with philosophers like Democritus proposing the idea. However, it was English scientist John Dalton in the early 19th century who developed the first modern atomic theory based on experimental evidence.