# Tag Info

The graph shows the probability of finding the electron between the distances $r$ and $r + dr$. This probability is given by: $$P = \psi^* \psi dV$$ where $dV$ is the volume element: $$dV = 4\pi r^2 dr$$ So we get the probability: $$P(r,r+dr) = \psi^* \psi 4\pi r^2 dr$$ and therefore when $r = 0$ the probability $P = 0$. It isn't that the ...