-
John Dalton was a English professor, John Daltons atomic theory was that Elements consist of of indivisble small particles that make up a atom. -
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 -
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 -
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.