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Answer:
1. The Plum Pudding Model - This model, proposed by Joseph John Thomson in 1904, depicts the atom as a small positive core surrounded by negative electrons.
2. The Rutherford Model - This model, proposed by Ernest Rutherford in 1911, depicts the atom as a small positive core surrounded by a cloud of negative electrons.
3. The Bohr Model - This model, proposed by Niels Bohr in 1913, depicts the atom as a small positive core surrounded by one or more electrons in fixed stable orbits.
4. The Quantum Mechanical Model - This model, proposed by Werner Heisenberg and Erwin Schrödinger in the 1920s and 30s, depicts the atom as a probability wave function.
5. The Standard Model - This is a modern model of the atom that combines the quantum mechanical model with the principles of particle physics.
Explanation:
These models have been revised and improved over time, and today scientists use the principles of quantum mechanics to understand the behavior of atoms and particles.