The $p_x$ orbital can accommodate:

The number of quantum numbers that can have the same values for two electrons in an atom is:

For an electron in $2s$ and $2p$ orbitals,the orbital angular momentum values,respectively,are $:$

The magnetic quantum number of the valence electron of sodium $(Na)$ is

In a given atom,no two electrons can have the same values for all the four quantum numbers. This is called:

For the given quantum numbers,write the name of the subshell,the values of the magnetic quantum number $(m_l)$,and the number of orbitals:
$(i) \ n = 3, \ l = 2$
$(ii) \ n = 4, \ l = 3$
$(iii) \ n = 2, \ l = 0$
$(iv) \ n = 5, \ l = 1$