The number of $2p$ electrons having spin quantum number $s = - 1/2$ is

The number of electrons in the outermost shell of an element with atomic number $15$ is . . . . . . .

For a magnetic quantum number $m = 0, \pm 1$,the value of the principal orbital (azimuthal quantum number $l$) corresponds to which subshell,and what is the minimum principal quantum number $n$ required for this set?

For azimuthal quantum number $l = 3$,the maximum number of electrons will be

There is no difference between a $2p$ and a $3p$ orbital regarding

The graph showing the variation of probability density,$\psi^2(r)$ with the distance of the electron from the nucleus,$r$ is given below. This represents: