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

Decomposition of hydrogen peroxide, how do you convert mL/s to mol/s using ...

how do you convert mL/s to mol/s using the colume of oxygen at satp?

Atomic absorption spectrophotometry, Atomic absorption spectrophotometry: ...

Atomic absorption spectrophotometry: Atomic absorption spectrophotometry (AAS) concerns the absorption of radiation by the atomised analyte element in the ground state. The at

Third law of thermodynamics, what are the limitations of third law of therm...

what are the limitations of third law of thermodynamics. what is thermodynamics third law.

Who modified bohr''s theory by introducing elliptical orbits, Who modified ...

Who modified Bohr's theory by introducing elliptical orbits for electron path: (1) Hund (2) Thomson (3) Rutherford (4) Sommerfield Ans: Sommerfield

using lewis structures to describe your reasoning, (a) Using Lewis structu...

(a) Using Lewis structures to describe your reasoning, describe why the following ions have different bond angles: ClO2 - and NO2 - (b) Given that the spatial arrangement of a

Radius of electron in the first excited state of hydrog atom, The radius of...

The radius of electron in the first excited state of hydrogen atom is: (1) a 0                      (2) 4a 0            (3) 2a 0                            (4) 8a o

P block elements, maximum no of unpaired electrons a)mn2+ b)ti3+ c)v3+ d)fe...

maximum no of unpaired electrons a)mn2+ b)ti3+ c)v3+ d)fe2+

Electrolytic conduction, what type of products are gained after electrolyti...

what type of products are gained after electrolytic conduction and in which matter?

General , Match the compounds below with the type of bonding each predomina...

Match the compounds below with the type of bonding each predominately exhibit. Question 3 options: NaCO3 NaBr SOCl2 CH4 1. ionic bonding 2. covalent bonding

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