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Atom, Atom Symbol, Physics, Science -

Atoms are the smallest unit of matter. Every Solid, liquid, and gas is composed of atoms The center of the atom is composed of smaller units or particles called sub-atomic particles such as the protons and neutrons. The outer part of the atom is composed of the electrons. In fact, the atom is really composed of nothing but empty space. The model of the atom was created by Niels Bohr in 1913 and became not only the symbol of the atom but the symbol of science.

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