If the value of the azimuthal quantum number $l$ is $2$,then the total possible values of the magnetic quantum number will be

Identify the incorrect statement from the following.

Select the correct statements for quantum numbers.
$(i)$ Magnetic quantum number $(m_l)$ gives information about the spatial orientation of orbitals with respect to the standard set of coordinate axes.
$(ii)$ Electron spin quantum number is represented by '$s$' and has values of $\pm \frac{1}{2}$.
$(iii)$ Principal quantum number $(n)$ determines the size of the orbitals and also,to a large extent,the energy of the orbitals.

If the value of $(n+\ell)$ is not greater than $3$,which of the following subshells is not possible $-$

Arrange the energy of the $2s$ orbital in the following atoms in decreasing order: $H, Li, Na, K$.

Nickel atom can lose two electrons to form $Ni^{2+}$ ion. The atomic number of nickel is $28$. From which orbital will nickel lose two electrons?