For the orbital with wave funcion ψ3,2,1   the sum of angular momentum, spherical nodes and angular nodes is

ψ(n,l,m)=ψ(3,2,1)orbital angular momentum =l(l+1)h2π=6h2πRadial nodes (Spherical nodes) = n-l-1=3-2-1=0Angular nodes = l=2Sum of orbital angular momentum, spherical nodes and angular nodes=6h2π+0+2=6h2π+2=6h+4π2π