Question

what is the meaning of atom define simply




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Answer 1

Answer:

An atom is the smallest unit of ordinary matter that forms a chemical element. ... More than 99.94% of an atom's mass is in the nucleus. The protons have a positive electric charge, the electrons have a negative electric charge, and the neutrons have no electric charge.

Explanation:

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Answer 2

Answer:

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. As such, the atom is the basic building block of chemistry. Shell Atomic Model.