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John Dalton
Dalton noted oxygen and carbon mixed to make a compound. -
Thompson
Thompson discovered the elecrton a negatively charged part of every atom. -
Nagoka
Nagoka proved the atom had a saturian rings around it. -
Rutherford
When Rutherford published his atomic theory describing the nucleus as having been surrounded by negative electrons. -
Niels Bohr
In 1913 he showed electrons traveled in circular orbits around the nucleus -
Chadwick
In 1932 Chadwick proved that the atomic nucleus contained a particle which had proposed more than a decade by Ernest Ruth ford.
