Which of the following orbitals will have zero probability of finding the electron in the $yz$ plane?

Which of the following sets of quantum numbers is not possible for an electron?

What is the difference between the ground state and the excited state of a hydrogen atom?

The electrons,identified by quantum numbers $n$ and $l$ as $(i) n = 4, l = 1$,$(ii) n = 4, l = 0$,$(iii) n = 3, l = 2$,$(iv) n = 3, l = 1$,can be placed in order of increasing energy,from the lowest to highest,as:

For $s-$orbitals,since $\psi$ (orbital) is independent of angles,the probability $(\psi^2)$ is

$d_{z^2}$ orbital has :