Question

what is an Atom...? ​

Answer 1

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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Answer 2

$\huge\underline\mathtt{Answer}$

An atom is the smallest component of an element and the building blocks of all matter, characterized by sharing of the chemical properties of the element and a nucleus with neutrons, protons, and electrons.