(N/A) Principal quantum number $(n): n$ defines the shell,determines the size of the orbital,and also to a large extent the energy of the orbital.
Azimuthal quantum number $(l):$
- $l$ identifies the subshell and determines the shape of the orbital.
- For a given $n$,$l$ can have values from $0$ to $(n-1)$.
- There are $(2l+1)$ orbitals of each type in a subshell (e.g.,$s, p, d, f$).
Magnetic quantum number $(m_l):$
- $m_l$ designates the orientation of the orbital in space.
- For a given value of $l$,$m_l$ has $(2l+1)$ values ranging from $-l$ to $+l$.
Spin quantum number $(m_s):$
- $m_s$ refers to the orientation of the spin of the electron.
- It can have two values: $+\frac{1}{2} (\uparrow)$ or $-\frac{1}{2} (\downarrow)$.