In an atom,if the $K$-shell has $2$ electrons,the $L$-shell has $8$ electrons,and the $M$-shell has $6$ electrons,what is the total number of electrons in the atom?

How many orbitals are present in a $g$ subshell?

The atom of the element having atomic number $14$ should have:

The correct decreasing order of energy for the orbitals having the following set of quantum numbers:
$A$. $n=3, \ell=0, m=0$
$B$. $n=4, \ell=0, m=0$
$C$. $n=3, \ell=1, m=0$
$D$. $n=3, \ell=2, m=1$

What are the electronic configurations of elements with atomic numbers $Z = 117$ and $Z = 120$?

The atomic number of the element having the maximum number of unpaired electrons (in the ground state) is ........