Structure Of The Atom

Quickly browse through questions and notes on related topics. You can also download and read this topic offline.

• Questions
• Summary

Atomic number is the fundamental properties of an atom. Every atom is identified by its unique atomic number.

Atomic number = Number of protons = Number of electrons

Mass number of an atom is defined as the sum of the number of protons and number of neutrons.

Mass number of an atom = Number of protons + Number of neutrons