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Dalton Model
The British chemist John Dalton discoverd that each element is made up of atoms. He also found that different elements have different masses. -
Thomas Model
A little less than 100 years later another British scientist J.J. Thomson created a atom model. He created a new model, saying that an atom is a positively charge sphere that includes electrons inside. -
Nagaoka Model
Physicist Hantaro Nagaoka is from Japan and created a model that showed the electrons revolving around the sphere that has the electric charge. -
Rutherford Model
The British physicist Ernest Ruthford stated that the atom is basically an empty space where electrons orbit around. -
Bohr Model
A Danish Physicist Niels Bohr introduced a model that can show electrons moving in specific shells and layers rather than randomly moving around the atom. -
Chadwick Model
British physicist James Chadwick discoverd the neutron. This described why atoms were heavier than the mass of their protons and electrons.. -
Present Model
Electrons form a negatively charged cloud that is around the nucleus. It is impossible to tell where a electron is on a specif time.
