Question

what is Quantum number???​

Answer 1

Quantum Numbers describes values of conserved quantities in the dynamics of a quantum system..

Answer 2

To describe each electron in an atom in different orbitals , there is four quantum number given to find it :-

1)Principal quantum number.

2)Azimuthal quantum number

3)Magnetic quantum numbers

4)Spin quantum number

The quantum no identifies shell ,orbital ,shape of orbitals ,spin of electrons etc.