The wave function of atomic orbital of H-like atom is `R_(2,0)" or R_(2s) =(1)/(4 sqrt(2 pi))Z^(3//2) (2-Zr)e^(Zr//2)`
Given that the radius is in `Å` , then what is the radiusfor nodal surface for `He^(+)` ion.

Explanation

`2-Zr=0" Since "Z=2" for "He^(+), Zr=2`
`r=2//Z=2//2=1` au (atomic unit of radius).