In this animate lecture, I will teach you the concept of atomic number and mass number. You will also learn that how can we calculate atomic number and mass number.

Q: What is atomic number?
Ans: Atomic number is defined as the total number of protons present in the nucleus of an atom. Atomic number is sipmly the number of protons present in an atomic.
For example, the atomic number of Hydrogen element is 1. The atomic number of Carbon element is 6.

Q: What is mass number?
Ans: Mass number is defined as the sum of total number of protons and neutrons present in the nucleus of an atom. Mass number or atomic mass is equal to the total number of protons and neutrons present in the nucleus.
For example, the mass number of Car is 12 units. Mass number of an Oxygen is 16 units.


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