Question

the smallest particle of an element that retains the properties of the element is called a(n) ______
a) proton
b) molecule
c) electron
d) atom

Explanation:

An atom is the smallest particle of an element that retains the chemical properties of the element. Protons, neutrons, and electrons are sub - atomic particles that make up an atom. A molecule is made up of two or more atoms.

Answer:

Atom