Question

what are quantum numbers​

Answer 1

Quantum numbers describe values of conserved quantities in the dynamics of a quantum system.

Answer 2

Answer:

Here you go!!

Explanation:

Quantum numbers are numbers assigned to all the electrons in an atom and they describe certain characteristics of the electron. 

The first three quantum numbers arise from the wave function, obtained by solving the Schrödinger equation.

The fourth quantum number, electron spin, arises from the discovery that electrons have two possible orientations.