Question

hestarical davalapment of atomic theray

Answer 1

They demonstrated that substances could combine to form new materials It was the English chemist, John Dalton, who put the pieces of the puzzle together and developed an atomic theory in Dalton 's atomic theorycontains five basic assumptions:
All matter consists of tiny particles calledatoms

Answer 2

in india atomic theory is developed by mahrishi kannad .he takes a gold brick and cut it into half then quarterand proceed it further at last he finds a small piecethat can not be cut off further .so he describe it as atom or parmanu that is indivisible