Electronic configuration of $H^{-}$ is

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?

Which of the following sets of quantum numbers is not valid?

Which of the following configurations is correct for iron $(Fe)$?

An atom of an element contains $29$ electrons and $35$ neutrons. Determine $(i)$ the number of protons and $(ii)$ the electronic configuration of the element.

The electrons,identified by quantum numbers $n$ and $l$ as $(i) n = 4, l = 1$,$(ii) n = 4, l = 0$,$(iii) n = 3, l = 2$,$(iv) n = 3, l = 1$,can be placed in order of increasing energy,from the lowest to highest,as: