Question

defination of atom ⚛️?​

Answer 1

defination of 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.

Answer 2

Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It also is the smallest unit of matter that has the characteristic properties of a chemical element.

• Components: Electrons and a compact nucleus of protons and neutrons
• Electric charge: zero (neutral), or ion charge
• Mass range: 1.67×10−27 to 4.52×10−25 kg
• Diameter range: 62 pm (He) to 520 pm (Cs) (data page)

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