Ψe1e=F(5,n)(2元y12eim where m-=0,±l,±2，±3， The associated quantum number is A.>orbital angular momentum 入=m Each electronic level with m 40 is doubly degenerate,i.e.+m,-m atoms:e=0,1.2....and the atomic orbitals are called:s,p,d,etc diatomics:入=0，l,2,.and the molecular orbitals are:o,π，δ，etc 入 letter Vece=F(5,n)(2元-12 eim 入 3 入=ml letter G 元 a e b f (a3ψelec = F(ξ,η) (2π)-1/2 eimφ where m=0, ±1, ±2, ±3, letter λ σ 0 π 1 δ 2 φ 3 γ 4 The associated quantum number is λ. Æ orbital angular momentum λ =|m| Each electronic level with m ≠0 is doubly degenerate, i.e. + |m|,-|m| atoms: l = 0,1,2,... and the atomic orbitals are called: s,p,d, etc. diatomics: λ = 0,1,2, ... and the molecular orbitals are: σ, π, δ, etc. letter λ σ 0 π 1 δ 2 φ 3 γ 4 ψelec = F(ξ,η) (2π)-1/2 eimφ λ =|m| σ π δ