Question

what is an atom urgent ?​

Answer 1

Answer:

Atom, smallest unit into which matter can be divided without the release of electrically charged particles. It is the smallest possible amount of a chemical.

Answer 2

Answer

An atom a fundamental piece of matter. ... An atom itself is made up of three tiny kinds of particles called subatomic particles: protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud.