Question

define atom.
...how r u yarr...​

Answer 1

Answer:

atom are the smallest particle of a molecule

Answer 2

Answer:

the smallest particle of a chemical element that can exist.

Explanation:

the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction; the number of protons determines the identity of the element.