Consider `psi` (wave function) of `2s` atomic orbital of H-atom is-
`psi_(2s)=(1)/(4sqrt(2pia_(0)^(3//2)))[2-(r )/(a_(0))]e^.(r )/(2a_(0)`
Find distance of radial node from nucleous in terms of `a_(0)`
A. `a_(0)`
B. `2a_(0)`
C. `(a_(0))/(2)`
D. `(a_(0))/(3)`