An atomic orbital has n=3. What are the possible values of l and m?

An electron is in one of the '3 d' orbitals. Give the possible values of 'n, l' and 'm and s for this electron.

Covalent bond is formed by the overlaping of atomic orbitals. What are the 3 types of overlapping ?

The electrons in an atom are designated by a set of quantum numbers labelled as n,l,m and s. Give the values of n,l,m and s for the valence electron of sodium atom, (atomic number =11)