Calculate the orbital angular momentum of the following orbital: $3\mathrm{d}$

Calculate the orbital angular momentum of the following orbital: $3\mathrm{s}$

Electron of ${\mathrm{Be}}^{3+}$ ion is present in an orbital which has $2$ angular nodes and $2$ radial nodes. Give sum of $\left(\mathrm{n}+\mathrm{l}\right)$ for orbital in which electron is present.

(Given: In this question $\mathrm{n}$ is principal quantum number and $\mathrm{l}$ is azimuthal quantum number).

The two electrons have the following sets of quantum numbers:

$\mathrm{X}: 3, 2, -2, +1/2$

$\mathrm{Y}: 3, 0, 0, +1/2$

What is true for them?