The Chemical Formula of the Oxygen We Require is O₂

Question

The chemical formula of the oxygen we require is O₂. It is
A) a compound.
B) an isotope.
C) an element.
D) a molecule.
E) both an element and a molecule.

Accepted Answer

Oxygen (O₂) is both an element, because it consists of only one type of atom (oxygen), and a molecule, because it is made up of two oxygen atoms bonded together.