Question

Explain the difference between the atom and the molecule of an element. Can a molecule of an element be the same as its atom? Give an example.

Answer 1

Atom	Molecule
Atom is the smallest particle of an element which cannot be further divided chemically.	Molecule is defined as the smallest particle of a compound which can be further divided in to atoms chemically.
It may or may not exist freely in nature.	A molecule bears the same property as its atom.
Example: Hydrogen (H)	Examples: Hydrogen gas (H2)

A molecule of an element can be same as its atom.
Example: A molecule of oxygen will have 2 atoms of oxygen.