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An atom is the smallest unit of ordinary matter that forms 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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What is atom ?
Atoms are the basic building blocks of matter. Atom is the smallest unit of matter. Atoms can jóin together to form molecules. Atoms are composed of electrons, protons & neutrons. Matter is everything around us.
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