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460
Democritus
a greek philospher who created the idea of atoms -
Period: 460 to
Atom Developement from 460 BC to 1913 AD
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Dalton
He led to the acceptance of atoms and stated that all elements are composed of atoms and that they are invisible and indestructible. -
J.J. Thomson
He said that atoms are divisble(Dalton theory was wrong)and that they are made up of positively and negatively charged particles. -
Rutherford
He discovered the nucleus, and that that it is composed of positively charged particles called protons. -
Bohr
He said that electrons move around the nucleus like the planets orbit the son.