104.5 b1 b2 a H20 H:03 The admixture of 2s 2p orbitals H is required. Inequivalent sp3 hybridization of O(2sp)AOs Px Py a b 104.5 b1 b2 H O H H2O The admixture of 2s & 2p orbitals is required. Inequivalent sp3 hybridization of O(2sp) AOs