How is an electron in an atom identified? State the parameters used.

The electrons identified by quantum numbers $n$ and $l$ :
$A. n=4, l=1$ $B. n=4, l=0$
$C. n=3, l=2$ $D. n=3, l=1$
can be placed in order of increasing energy as :

The total value of magnetic quantum number for $n = 4$ is:

The $20^{th}$ electron of $Fe$ $(Z = 26)$ has which of the following sets of quantum numbers?

When the principal quantum number is $n = 3$,the possible values of the azimuthal quantum number $(l)$ are:

Which of the following represents the electronic configuration of an element with atomic number $17$?