Question

1 ) what is atom?? ​

Answer 1

Answer:

An Atom is the smallest particle that takes part in a chemical reaction

Explanation:

Atoms consist of a nucleus made of protons and neutrons orbited by electrons. ... We now know that atoms are made up of three particles: protons, neutrons and electrons — which are composed of even smaller particles, such as quarks.

Answer 2

Explanation:

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 iodized atoms, atoms are extremely small, typically around 100 picometers across.