For which of the following orbitals is the value of $(n + l)$ maximum?

On the basis of which rules does the arrangement of electrons take place in atoms?

In a multi-electron system,the energy of an electron of $2p_y$ orbital is :-

Consider the following sets of quantum numbers $(n, l, m_l)$:

Set	$(n, l, m_l)$
$A$	$(3, 3, -3)$
$B$	$(3, 2, -2)$
$C$	$(2, 1, +1)$
$D$	$(2, 2, +2)$

The number of correct sets of quantum numbers 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?

Match the $LIST$-$I$ with $LIST$-$II$:

List-$I$ (Orbital)	List-$II$ (Radial nodes and nodal plane)
$A$. $2s$	$I$. $1$ Radial node + two nodal planes
$B$. $3s$	$II$. $1$ Radial node + one nodal plane
$C$. $3p$	$III$. $2$ Radial nodes + No nodal plane
$D$. $4d$	$IV$. $1$ Radial node + No nodal plane