The spin angular momentum for an electron is given by .......

There is no difference between a $2p$ and a $3p$ orbital regarding

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

The five valence electrons of $P^{15}$ are labeled as $A, B, X, Y, Z$ as shown in the figure. If the spin quantum number of $B$ and $Z$ is $+\frac{1}{2}$,identify the group of electrons that share three identical quantum numbers.

Write the electronic configuration of chromium $(Cr)$ and copper $(Cu)$. Give reasons for the observed configurations of $Cr$ $(Z = 24)$ and $Cu$ $(Z = 29)$.

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