Number of orbitals in $h$ sub-shell is

Which one of the following is the correct set of four quantum numbers $(n, l, m, s)$?

If $Br^{-}$ configuration is $[Ar]\, 3d^{10}\,4s^2\,4p^6$,then $Br^{+2}$ configuration will be identical to which element?

The maximum number of electrons present in an orbital with $n=4, l=3$ is

What would be the electronic configuration of $Cs (Z=55)$ in each case?
$(a)$ If there were three possibilities of the electron spin.
$(b)$ If the quantum number,$l$,could have the value $n$,and if all the rules governing electron configuration were otherwise valid.

The number of nodal planes a $d$ orbital has is: