For $d$ electrons,the azimuthal quantum number is

In an atom having $2$ $K$,$8$ $L$,$8$ $M$ and $2$ $N$ electrons,the number of electrons with $m=0$ and $s=+\frac{1}{2}$ is $:-$

What is the number of radial and angular nodes in a $5f$ orbital?

List the quantum numbers ($l$ and $m_{l}$) for an electron in a $3d$ orbital.

$(i)$ Write the electronic configurations of the following ions:
$(a)$ $H^{-}$
$(b)$ $Na^{+}$
$(c)$ $O^{2-}$
$(d)$ $F^{-}$
$(ii)$ What are the atomic numbers of elements whose outermost electrons are represented by
$(a)$ $3s^{1}$
$(b)$ $2p^{3}$ and
$(c)$ $3p^{5}$?
$(iii)$ Which atoms are indicated by the following configurations?
$(a)$ $[He] 2s^{1}$
$(b)$ $[Ne] 3s^{2} 3p^{3}$
$(c)$ $[Ar] 4s^{2} 3d^{1}$

In the ground state, an element has $13$ electrons in the $M$ shell. The element is