What is a molecule ?

(a) What is an atom ? How do atoms usually exist ? (b) What is a molecule? Explain with an example. (c ) What is the difference between the molecule of an element and the molecule of a compound ? Give one example of each.

What is molecule?

What are molecules?

What is homoatomic molecule ? Give two examples .

What kind of a molecule AlCl_3 is ?

What is dipole moment of a molecule ?