Please tell me the difference between valence band and conduction band?

Dear Mahima,

 Following are the diffreences: 

 VALENCE BAND:

1. In this band there are valence electrons.

2. This band may be partially or completely filled with electrons.

3. In this band the electrons are not capable of gaining energy from external electric field.

4. The electrons in this band do not contribute to electric current.

5. In this band there are electrons of outermost orbit of atom which contribute in band formation.

CONDUCTION BAND:

1. In this band the electrons are rarely found.

2. This band is either empty or partially filled with electrons.

3. In this band the electrons can gain energy from electric field.

4. Electrons in this band contribute in this band contribute to electric current.

5. In this band there are electrons which are obtained on breaking the covalent bands.

askIITians.com provides online iit jee courses and IIT JEE Test Series with IITians. Click here to get free online test series and check your status timely or you can join us as our registered user for getting best iit jee study material or iit jee test series.

Click here to find IIT JEE Packages or course details with askIITians.

for further details visit the folowing links:

http://www.askiitians.com//iit-jee-online-coaching.aspx

http://www.askiitians.com/iit-jee-test-series.aspx

http://www.askiitians.com/iit-study-material/

Askiitians provide you all the best possible information, feel free to ask.

all the best.

thanks and regards.

Akhilesh Shukla