Which of the following pairs of ions have the same electronic configuration?

For $ns$ orbital,the magnetic quantum number has value

$A$ certain orbital has $n = 4$ and $m_{L} = -3$. The number of radial nodes in this orbital is .......... (Round off to the Nearest Integer).

Identify the incorrect statement from the following.

In a multielectron atom,which of the following orbitals described by three quantum numbers will have the same energy in the absence of electric and magnetic fields?
$A: n=1, \ell=0, m_{\ell}=0$
$B: n=2, \ell=0, m_{\ell}=0$
$C: n=2, \ell=1, m_{\ell}=1$
$D: n=3, \ell=2, m_{\ell}=1$
$E: n=3, \ell=2, m_{\ell}=0$
Choose the correct answer from the options given below:

Identify the pair of orbitals having similar $(n + l)$ values from the following.