What is the number of orbitals in the $2p$ and $3p$ subshells? Where are they located?

The maximum number of electrons that can be accommodated in a $3d$ subshell is

The number of $s$-electrons present in an ion with $55$ protons in its unipositive state is

Which electronic configuration represents a noble gas?

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 represents the orbital with the highest energy?