SIMILARITIES: Valence Bond Theory (VBT) and Molecular Orbital Theory (MOT) have the following common features: 1. The Basic principle is same in both the theories. Both involve distribution of electrons.…
Single covalent bond Formation of a covalent bond by sharing of one pair of electrons i.e. two electrons are involved is called a ‘single covalent bond’, or simply a single…
Pi (π) Bonds When sideways overlapping or lateral overlapping of the two atoms take place is known as lateral overlap of their ‘p’ orbital, and the bond formed is known…
Resonance Energy The difference between the actual energy of the molecule and that of most stable resonating structure is known as Resonance Energy. Let us suppose that a molecule have…
The four sp3 hybrid orbitals are as follows: Ψ 1 = a 1 ф s + b 1 ф py +d 1 ф pz Ψ 2 = a 2 фs…
Bond order is given by Bond order = /2 Bond order is directly proportional to bond dissociation energy and inversely proportional to bond length i.e. higher the bond order, larger…
HOMO : The highest occupied molecular orbital LOMO : Lowest unoccupied molecular orbital. The term Band gap means the difference between energies of the HOMO and LUMO. It will also…
The relative energies of molecular orbitals depend upon the following two factors: (i) Atomic orbitals energies for the combination to form molecular orbitals. (ii) The extent of overlapping between the…
Fajan gives the following four rules for the Polarisation: Polarization will be increased by: 1. High charge and small size of the cation. 2. High charge and large size of…
The valence bond theory was developed by W.Heitler and F.London in 1927. Then it was further amended by the Linus Pauling and J.C. Slater. For this Linus Pauling get the…
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