The number of radial nodes present in $3p$ orbital is

$Be$'s $4^{th}$ electron will have four quantum numbers $(n, l, m, s)$:

What is the relationship between the shapes of $3d_{xy}$ and $3d_{x^2-y^2}$ orbitals?

$A$ hydrogen atom has only one electron,so mutual repulsion between electrons is absent. However,in multielectron atoms,mutual repulsion between the electrons is significant. How does this affect the energy of an electron in the orbitals of the same principal quantum number in multielectron atoms?

The maximum number of sub-levels, orbitals and electrons in $N$ shell of an atom are respectively

The outer electronic structure $3s^23p^5$ is possessed by