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John Dalton
John Dalton was a English professor, John Daltons atomic theory was that Elements consist of of indivisble small particles that make up a atom. -
JJ Thomson
Sir Joseph john thomson, He discovered the electron he also had a atomic theory that all atoms contain a negatively charged subatomic particle or electron -
Ernest Rutherford
He was born in new Zealand. He is well known for splitting lithium into particles. he also made the gold foil experiment it showed that the atom consists of a small positively charged nucleus with the negetivly charged electrons being at great distance from the center -
Neils Bohr
He was a danish scientist. in 1913 he proposed the theory of hydron atom, he explained that atoms emit light through wavelengths. and proposed a theory in which the electron was able to occupy only certain orbits around the nucleus.