Solid Sphere Model, Atoms are spheres, John Dalton, Shows different elements have different atoms, Does not explain the existence of electrons, , Plum Pudding Model, Atoms are positive spheres with negative electrons scattered in them, J. J. Thomson, Shows how atoms have electrons, Does not explain Rutherford's observations, , Nuclear Model, Atoms have a small positive nucleus with negative electrons orbiting it, Ernest Rutherford, Shows that positive charge is in a central nucleus, Does not explain why electrons orbit the nucleus, .

Atomic Models

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