Question

WHY IS ATOM NEEDED FOR AN ELEMENT

Answer 1

Atom is not actually needed for an element. Element is made up of atom of the same kind. For example, O2 it is an element of two oxygen atoms.

Answer 2

an element tend to attain stable electronic configuration to undergo chemical reaction. in order to do so, it needs to share, donate or gain eloctrons of its atom from another atom. that is why an element needs atoms.