For an orbital in `B^(+4)`, radial function is `R_((r)) =(1)/(9sqrt(6))((Z)/(a_(0)))^(3//4) (4- sigma )sigma e^(-sigma//2)`
where `sigma =(Zr)/(a_(0)), a_(0)=0.529 Å, Z=` atomic number, and r is the radial distance from the nucleus. Find the distance of the rdial node from the nucleus.

Options

A. 0.529
B. 2.12
C. 1.06
D. 0.423

Explanation

`sigma =4 =(Zr)/(a_(0)) r rArr (4a_(0))/(Z)=(4xx0.529)/(5)=0.423 Å`