Which of the following ions does not have the same electronic configuration as $Ne$?

Which of the following statement$(s)$ is/are true?
$A$. If two orbitals have the same value of $(n+l)$, the orbital with lower value of $n$ will have lower energy.
$B$. Energies of the orbitals in the same subshell increase with increase in atomic number.
$C$. The size of $2p_x$ orbital is less than the size of $3p_x$ orbital.
$D$. Among $5f, 6s, 4d, 5p$ and $5d$ orbitals, none of the orbitals have $2$ radial nodes.

The degeneracy of the energy level of a hydrogen atom that has an energy of $\left(\frac{-R_{H}}{16}\right)$ is

Which one of the following statements is incorrect?

The maximum number of electrons that can be accommodated in $f-$ shell is:

Which orbital is closer to the nucleus: $2p$ or $3p$?