D(r) A spherical surface with the electron density of 1s zero is called a node,or 0 nodal surface. 40 The radial distribution function has (n-1)maxima 38 and (n-1-1)nodal surfaces 0 2p 0 3p Fig.The radial distribution diagram (D(r)-r) 2.3.3 The angular function Yim(0,)) Ψ(r,0,p)=R⊙Φ=RY(0,p) Angular part Yn(0,p)=⊙，(8)④m(p) Indicates the angular distribution of an atomic orbital. M2 =-[ (sin- sin0 00 0 sin20002 M2Ym(0,p)=10+1)hYm(0,p) M.Y(,)=mhY(0)Fig. The radial distribution diagram (D(r)-r ) The radial distribution function has (n-l) maxima and (n-l-1) nodal surfaces • A spherical surface with the electron density of zero is called a node, or nodal surface. D(r) 2.3.3 The angular function ( Ylm(θ,ϕ) ) Ψ(r,θ ,ϕ) = RΘΦ = RY(θ ,ϕ) (θ ,ϕ) (θ ) (ϕ) Ylm = Θl Φm f Angular part ] sin 1 (sin ) sin 1 [ 2 2 2 2 2 θ θ φ θ θ θ ∂ ∂ + ∂ ∂ ∂ ∂ = − ∧ M h 2 2 ( , ) ( 1) ( , ) ˆ lm lm MY Y θ ϕ θϕ = + l l h (, ) (, ) ˆMY m Y z lm lm θ ϕ θϕ = h Indicates the angular distribution of an atomic orbital