If the atomic number of element $X$ is $7,$ the best electron dot symbol for the element is

When the azimuthal quantum number has a value of $l = 1$,the shape of the orbital is

Which of the following sets of quantum numbers is not possible?

Which of the following sets of quantum numbers is not possible?

The maximum probability of finding an electron in the $d_{xy}$ orbital is

The extra stability of half-filled subshells is due to:
$(A)$ Symmetrical distribution of electrons
$(B)$ Smaller coulombic repulsion energy
$(C)$ The presence of electrons with the same spin in non-degenerate orbitals
$(D)$ Larger exchange energy
$(E)$ Relatively smaller shielding of electrons by one another
Identify the correct statements.