Answer
An atomic element is an element that exists in nature with single atoms as their basic units.
A molecular element is an element that exists in nature with diatomic or polyatomic molecules as their basic unit.
An ionic compound is a compound composed of cations and anions bound together by electrostatic attractions.
A molecular compound is a compound composed of two or more covalently bonded nonmetals.
Work Step by Step
Gold is an example of an atomic element ($Au$).
Diatomic chlorine is an example of a molecular element ($Cl_2$).
Sodium chloride is an example of an ionic compound ($NaCl$).
Carbon dioxide is an example of a molecular compound ($CO_2$).
