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Determined that atoms are indivisible particles
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The solid sphere model:
Describes atoms as solid, indestructible spheres -
The raisin bun Model:
Describes atoms as solid spheres made-up of a solid positive mass with tiny negative particles embedded in the positive core. -
The Planetary Model:
Gold Leaf Experiment proves that the nucleus is positive and the electrons are outside the nucleus. -
Used atomic spectra to prove that electrons are placed in orbitals around the nucleus
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Electron Cloud Model:
Describes electrons moving around the nucleus in a "cloud" of energy levels
