The Development of the Atomic Model (2)

Scientist who discovered protons

Ernest Rutherford

Scientist who discovered electrons

J.J. Thomson

Scientist who discovered neutrons

James Chadwick

The subatomic particles found in an atom

Is made up of protons, neutrons and electrons

Symbol of electron

e

Symbol of proton

p

Symbol of neutron

n

Studies on atoms

Started since the introduction of atomic theory by Democritus, a Greek philosopher, around 500 B.C.

John Dalton

J.J. Thomson