Chapter 7, Problem 7.152QP

The wave function for the 2s orbital in the hydrogen atom is

${\Psi }_{2s}=\frac{1}{\sqrt{2a_0^3}}\left(1-\frac{\rho }{2}\right)e^{-\rho /2}$

where a₀ is the value of the radius of the first Bohr orbit, equal to 0.529 nm, ρ is Z(r/a₀), and r is the distance from the nucleus in meters. Calculate the location of the node of the 2s wave function from the nucleus.