The band model, Chemistry

Assignment Help:

The band model of solids is an extended of the molecular orbital (MO) method. The overlap of atomic orbitals in an extended solid produces rise to continuous bands of electronic energy levels associated with different degrees of bonding. In a simple monatomic solid the bottom of the band is build up of orbitals bonding between all neighboring atoms; orbitals at the top of the band are antibonding, and levels in the middle have an intermediate bonding character. Different atomic orbitals may, in principle, give rise to different bands, although they may overlap in energy.

 

 

 

1262_Untitled.png

 

Fig. 1. Band picture for (a) nonmetallic and (b) metallic solid; occupied electronic levels are shown shaded.

 

Increases in temperature approximately in accordance with the Arrhenius equation used in chemical kinetics.

 


Related Discussions:- The band model

Analytical chemistry, WHAT TYPE OF CHEMICAL REACTION IS INVOLVED IN POTENTI...

WHAT TYPE OF CHEMICAL REACTION IS INVOLVED IN POTENTIOMETRIC TITRATION

Merits of atomic fluorescence spectrometry, Merits of Atomic fluorescence s...

Merits of Atomic fluorescence spectrometry: Merits of the technique involve extremely low detection limits for favourable elements and the possibility of handling solid, liqui

Explain bond energy, The amount of energy released when one mole of bonds a...

The amount of energy released when one mole of bonds are formed among the corresponding gaseous atoms is known as Bond energy.

#title.chemistiry of f-block elements., #question.all questions under lanth...

#question.all questions under lanthanides and actinides.

Preparation of hot souffle?, Q. Preparation of hot souffle ? i) Melt 1...

Q. Preparation of hot souffle ? i) Melt 12 g butter in a saucepan. Add 12 g flour and stir cook for 1-2 minutes. ii) Gradually add ¼ cup of scalded milk stirring continuou

Chemicals, why does sulfuric acid get hotter when you neutralise it

why does sulfuric acid get hotter when you neutralise it

Avart sarani, avart sarani me varg and avart

avart sarani me varg and avart

Describe, describe the reaction and constitution of glucose.

describe the reaction and constitution of glucose.

Melting points of s block, give the melting temperature values of group 2 e...

give the melting temperature values of group 2 elements

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