Structure of Atom.....❤
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An atom is the smallest constituent unit of ordinary matter that constitutes a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.
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The basic structure of an atom includes a tiny, relatively massive nucleus, containing at least one proton and usually one or more neutrons. Outside of the nucleus are energy levels (also called shells), which contain one or more electrons. The energy levels are often called rings
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