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

Smallest heat of hydrogenation per mole, which of the following has smalles...

which of the following has smallest heat of hydrogenation per mole A) 1-Butene                     B)trans-2-butene C)cis-2-butene                D)1,3-butadiene Ans)     D)1,3-

Electrochemistry, Q. Describe Electrochemistry Electricity (i.e., elect...

Q. Describe Electrochemistry Electricity (i.e., electric current) is a flow of electric charges. In metals, it is the flow of electrons. In electrolytes, it is the mov

Aldehydes and ketones, Aldehydes and Ketones Carbonyl compounds are of ...

Aldehydes and Ketones Carbonyl compounds are of two types, ketones and aldehydes. Both of them comprise a carbon-oxygen double bond frequently known as carbonyl group.

Oxidation, When assigning oxidation numbers and you have to do the math to ...

When assigning oxidation numbers and you have to do the math to find the oxidation number of something in the compound, what are you ultimately trying to get that compound to equal

Co, Complexes

Complexes

A moving particle may have wave motion, A moving particle may have wave mot...

A moving particle may have wave motion, if: (1) Its mass is very high (2) Its velocity is negligible (3) Its mass is negligible (4) Its mass is very high and velocity

S block, Anomalous behaviour of boron

Anomalous behaviour of boron

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