The number of possible spatial orientations of an electron in an atom is given by its

The principal quantum number of an atom represents:

The radial probability distribution curve for an orbital comprises of $3$ maxima. If the orbital has $3$ angular nodes as well,then the orbital can be:

The maximum number of orbitals present in $n=4$ energy level of an atom and the maximum number of electrons with spin value $+\frac{1}{2}$ in the same orbitals are, respectively.

Degenerate atomic orbitals have

The correct statement about probability density (except at infinite distance from the nucleus) is: