Explain valence bond theory, Chemistry

Assignment Help:

Q. Explain Valence Bond Theory?

This concept starts with the assumption that the bond between the metal ion and the ligand is basically covalent in nature. In order to form a chemical bond the central metal ion must have enough of vacant orbitals to accept the lone pairs of electrons from the ligands. The number of bonds formed is thus' directly related to the number of vacant orbitals on the metal ion. At this stage. Pauling introduced the concept of hybridised atomic orbitals.  Accordingly, the vacant atomic orbitals on the metal ion combine to give a set of hybridised orbitals. For hybridisation only those orbitals are used which have the correct orientation in space and whose energy values are very near to each other. These hybridised orbitals overlap with the ligand orbitals to share the lone pairs of electrons from the ligands. Since these hybridised orbitals show a definite orientation in space, the geometry of the molecule is determined by the kind of hybridisation involved.

849_Explain Valence Bond Theory.png

In Table, the numbers shown in paranthesis represent the number of specific. Orbitals involved in hybridisation. They do not indicate either the principal quantum number or the number of electrons in a particular orbital.


Related Discussions:- Explain valence bond theory

Chemical reactions, the reaction of kmno4 nd c2o4 .why does it produce brow...

the reaction of kmno4 nd c2o4 .why does it produce brown colour first

Solution, a student prepared a solution of sodium carbonate by 2.111g of th...

a student prepared a solution of sodium carbonate by 2.111g of the solid to a 250.0ml volumentric flask and adding H2O to the mark.Some of this solution was transferred to a burett

Describtion of carnot cycle, The Carnot cycle consists of four processes in...

The Carnot cycle consists of four processes in succession: 1. isothermal compression from T L , V 1 to T L , V 2 2. adiabatic compression from T L , V 2 to T H , V 3 3

Diagonol relationship, What is difference between aluminium and beryllium?

What is difference between aluminium and beryllium?

Uses, Ask question #Minimuuses of nitoalkanem 100 words accepted#

Ask question #Minimuuses of nitoalkanem 100 words accepted#

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd