What is the maximum number of electrons accommodated in a subshell having azimuthal quantum number,$\ell=2$?

How many values of magnetic quantum number are possible for each value of azimuthal quantum number?

$Ge$ $(Z=32)$ in its ground state electronic configuration has $x$ completely filled orbitals with $m_{l}=0$. The value of $x$ is ..... .

Which orbital notation does not have a spherical node?

In a multi-electron atom,which of the following orbitals described by the three quantum numbers will have the same energy in the absence of magnetic and electric fields?
$1. n = 1, l = 0, m = 0$
$2. n = 2, l = 0, m = 0$
$3. n = 2, l = 1, m = 1$
$4. n = 3, l = 2, m = 0$
$5. n = 3, l = 2, m = 0$

The shape of $p$-orbital is