Answer: chlorine
Explanation:
Element is a pure substance which is composed of atoms of similar elements. Example: sodium [tex]Na[/tex], Neon [tex]Ne[/tex]
Molecule of an element is the smallest unit of any matter which always have independent existence and is made up of similar elements. Example: Chlorine [tex]Cl_2[/tex]
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions.
Molecule of a Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass. Example: carbon dioxide [tex]CO_2[/tex]
