hybridisation.ppt 12445655 different type x

Different types of hybridization

1. HYBRIDISATION

2. INTRODUCTION Introduced by Linus Pauling. Hypothetical concept

3. HYBRIDISATION The intermixing of various orbitals of slightly different energies in the same atom with redistribution of their energies to yield new set of the same number of orbitals of equivalent energies and shapes is known as hybridisation. New orbitals – hybrid orbitals New bonds – hybrid bonds

4. Important criteria regarding hybridisation : Orbitals should have comparable energies The inner shells too if energetically comparable take part in hybridisation

5. Salient features of hybridisation The number of hybrid orbitals produced is equal to the number of the atomic orbitals that take part in the process of the hybridisation. Hybrid orbitals produced are equivalent in energy and shape. The extend of overlap achieved by a hybrid orbital during bonding is greater than that obtainable from a pure orbital .

6. Proper overlapping gives stronger bonds with energetically more favourable orientations. 4. The hybrid orbitals are oriented in space in preferred directions such that there is least repulsion between electron pairs and there is stable arrangement. .

7. Types of hybridisation Hybridisation involving only ‘s’ and ‘p’ orbitals 1. sp 3 hybridisation