Answer :
Rutherford -atoms has a positive nucleus
Dalton -atoms are indivisible
Thompson -atoms contain electrons
Millikan -Electrons have a charge of -1
Ernest Rutherford discovered that an atom consists of a central positively charged nucleus.
John Dalton discovered that all elements are made up of small, indivisible particles called atoms.
J.J Thompson discovered the electrons by the study of cathode ray.
R.A Millikan discovered the charge on an electron.
