The spin of the electron:

Although no currently known element contains electrons in $g$ orbitals in the ground state,it is possible that such an element will be found or that electrons in excited states of known elements could be in $g$ orbitals. For $g$ orbitals,$l = 4$. What is the lowest value of $n$ for which $g$ orbitals could exist? What are the possible values of $m_l$? How many electrons could a set of $g$ orbitals hold?

Explain how the energy of an orbital and the extent of shielding in the same shell depend on the shape of the orbitals.

What is the atomic number of the element with the maximum number of unpaired $4p$ electrons?

Identify the orbital having the lowest energy from the following.

Explain the arrangement of orbitals in increasing order of energy on the basis of the $(n + l)$ rule.