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miadudg
the atomic number is the average number of protons and neutrons in an atom this is found by looking at the number below the main number on the periodic table.
andresburgos402

Answer: An atom a fundamental piece of matter. ... An atom itself is made up of three tiny kinds of particles called subatomic particles: protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud.

Explanation:

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