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attomic_structure

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rs (pm) or angstroms (Å), with one angstrom equal to 0.1 nanometers. The size of the atom can vary dep... atoms in a solid state being more closely packed together than those in a gas state. The properties ... rong nuclear force holds the protons and neutrons together in the nucleus, while the electromagnetic f... for centuries, and many models have been proposed to explain its behavior. The most widely accepted mo