Question

what is an atom ?

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Answer 1

Answer:

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

ATOM : »»»

• 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.

• They are so small that accurately predicting their behavior using classical physics—as if they were tennis balls, for example—is not possible due to quantum effects.

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