Quantum numbers are the conserved quantities in the system that expresses the position of the electron. The second quantum number describes the electron subshells.
Quantum numbers are the energy and the position defining values of the electron in the atomic structure. There are four basic quantum numbers, principal, magnetic, azimuthal, and spin quantum.
The second quantum number (I) is the angular quantum number that describes the magnitude of the subshells (s,p, d, and f) or the type of the subshells. It is also known as the Azimuthal quantum number.
Therefore, the second quantum number shows the electronic subshells.
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