What is an atom?
An atom is the basic unit of a chemical element.
What is a molecule?
A molecule is a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
-Monatomic - He, Ar
-Diatomic - O2, H2
-Triatomic - O3
-Polyatomic - S8
What is an ion?
An ion is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
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