The maximum number of electrons in a subshell of an atom is given by ...........

Which of the following arrangements shows the correct order of decreasing paramagnetism?

Given below are two statements:
Statement $I$ : For a given shell,the total number of allowed orbitals is given by $n^2$.
Statement $II$ : For any subshell,the spatial orientation of the orbitals is given by $-l$ to $+l$ values including zero.
In the light of the above statements,choose the correct answer from the options given below:

The number of nodal planes (planes of zero electron density) in the $d_{xy}$ orbital is:

What is the maximum number of electrons that can have the quantum numbers $n = 5$ and $m_l = +2$?

The quantum numbers $+1/2$ and $-1/2$ for the electron spin represent