Using $s, p, d, f$ notations,describe the orbital with the following quantum numbers:
$(a) n=2, l=1$
$(b) n=4, l=0$
$(c) n=5, l=3$
$(d) n=3, l=2$

Write down about the Hund's rule.

The electronic configurations of four elements are given in brackets:
$L(1s^2, 2s^2\ 2p^1);$ $M(1s^2, 2s^2\ 2p^5)$
$Q(1s^2, 2s^2\ 2p^6, 3s^1);$ $R(1s^2, 2s^2\ 2p^2)$
The element that would most readily form a diatomic molecule is:

What are the four quantum numbers for the valence electron of sodium $(Z = 11)$?

How many radial nodes are present in $4s$ and $3s$ orbitals respectively?

The value of the azimuthal quantum number for electrons present in the $4p$ orbital is: