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Danish Scientins that created the model of electrons in orbit of the nucleus in a leveled way
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American Physist tht was able to determine the mass of eletrons. He also stated that all atoms have electrons and they all have a negative charge.
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He was Thomsons student. He made an experiment and his result was a new model of the atom. The nucleus being a dense ball of mass and the electrons travel around it
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British scientist who discover an error on Dalton's theory.
He discover that inside an atom their are even smaller particules inside of it. He discovered by the Cathode Ray Tub. He discover the Electron -
He is a British scientist who show that atoms could be combined with other atoms in specific proportions.
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Greek philosopher who was against Democritous, he didnt believe that atom were indivisible
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Greek philosopher, Democritus invent the word atom for all particules that are indivisible. He also proposed that every atom are small, hard and are made of only one kind of material.