a.sp hybridization (linear species) One s and one p AO mix to form a set of two hybrid orbitals. 2s sp hybrid 2Px sp hybrid -+ sp,0=l80°，linear, Normalization and orthogonality 0h2 1V2 s b.sp2 hybridization (trigonal planar) One s and two p(Px and py)AO's mix to form a set of three 30 hybrid orbitals. 1 2 <30! 1 25 h2 sp2,Dh,0=l20°，triangular, f=1.991,=1/3 ha. sp hybridization (linear species) • One s and one p AO mix to form a set of two hybrid orbitals. ( ) 2 1 ( ) 2 1 2 2 1 2 h s px h s px φ φ φ φ φ φ = − = + sp, θ=180°, linear, Normalization and orthogonality h s px py h s px py h s px 3 2 2 2 2 2 1 2 2 1 6 1 3 1 2 1 6 1 3 1 3 2 3 1 φ φ φ φ φ φ φ φ φ φ φ = − − = − + = + • One s and two p (px and py) AO’s mix to form a set of three hybrid orbitals. b. sp2 hybridization (trigonal planar) sp2, D3h, θ=120°, triangular, f=1.991， α=1/3 φh1 φh2 φh3 x y