Atomic Theory of Indivisibility, Leucippus & Democritus, Matter is made of tiny, indivisible particles called atoms that cannot be broken down., John Dalton, Dalton’s Atomic Model, Atoms are solid, indivisible spheres, and each element is made of its own type of atom., Joseph Thomson, Thomson’s Plum Pudding Model, The atom is a positively charged sphere with negatively charged electrons embedded in it., Ernest Rutherford, Rutherford’s Nuclear Model, The atom has a small, dense, positively charged nucleus containing most of its mass, with electrons around it., Niels Bohr, Bohr’s Planetary Model, Electrons move around the nucleus in fixed circular orbits called energy levels., Jame Chadwick, Chadwick’s Neutron Model, The nucleus contains positively charged protons and neutral neutrons, while electrons surround the nucleus., Erwin Schrodinger, Schrödinger’s Current Model, Electrons move around the nucleus in orbitals, regions of probability organized into different energy levels

Atomic Models

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