Question

Give differences between an atom and an ion.

Answer 1

Difference between ion and atom:

Atom	Ion
The building blocks of all matters are atoms.	Compounds composed of metals and non-metals has charged species. The charge species are known as ions.
Atoms are divided into  protons, neutrons, and electrons.	Ions are divided into cations and anions.
Atoms may or may not be able to exist independently.	Ions exist only independently.
For examples Na,S8,P4 etc.	For ex: sodium ion (Na+),calcium ion (Ca2+)