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

#title., i just need to know if anyone that might know of a website that ha...

i just need to know if anyone that might know of a website that has the answer key to the book chemistry Prentice Hall Brief Review 2013

Show the nomenclature compounds, Q. Show the Nomenclature compounds? In...

Q. Show the Nomenclature compounds? In the earlier days naming of complexes was based on the colour of the complex. For example: Compound                              Colou

Benzylic halide undergo sn1 or sn2 mechanism , Will benzylic halide undergo...

Will benzylic halide undergo SN1 or SN2 mechanism ?Why? Ans) Benzyl chloride is a  primary alkyl halide and undergo SN2 rapidly.

Which one of the following is not isoelectronic with o2, Which one of the f...

Which one of the following is not isoelectronic with O 2- : (1) N- 3                    (2) F -         (3) Tl +                   (4) Na + Ans: Tl +

Aromaticity, compare the acidity between pyrole and pyrimidine

compare the acidity between pyrole and pyrimidine

Explain peroxide-promoted addition, Explain Peroxide-promoted addition ...

Explain Peroxide-promoted addition Peroxide-promoted addition is in competition with normal addition and rearrangement. The normal processes happen at the same rate at which t

Atomic structure, What isbrutherford contribution to thr eludication of ato...

What isbrutherford contribution to thr eludication of atomic structurr

Organic chemistry, What is electron migration effects and mention their app...

What is electron migration effects and mention their applications

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