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4. (a) Explain the concept of (i) intrinsic, (ii) n-type, and (iii) p-type semiconductors with the aid of bond diagrams and band diagrams.
(b) What is a hole? Using a mathematical derivation to show that the holes behave like positive charges.
(c) Explain with the aid of Fermi-Dirac distribution function that at 0° K, all the energy states in the valence band of silicon are filled and all the energy states in the conduction band are empty.
(d) Why it is necessary to use effective mass instead of real mass for electrons in the analysis of semiconductor materials and mention why different effective masses are to be used for different types of semiconductors,
(e) Explain (a) bonding orbital and (b) anti-bonding orbital.
diagonal relationship between Li and Mg
List three factor that affect conductivity
Explain What is a base line? Base line is nothing but the detectors response to the mobile phase.(gc,hplc)
Q.Illustrate the Basic structure of polymers? Ans. Polymers are large organic compounds made of regularly repeating units. Plastics are made of polymers. Polymers ar
Q. Describe about Oxides? As said before, oxygen reacts practically with all the elements in the periodic table, except Lighter noble gases, to form binary compounds called oxi
Using the valence bond approach, reduce the shape and magnetic character of What are elastomers? Write the chemical equation to show the preparation ration of Buna-S.
Example for rajan rule
How many fluorescence photons will really be detected on average by the photo detector during a 10 ms acquisition window if one diIC12 molecule is located in the illuminated area?
which quantities are conserved in all oxidation-reduction reactions
stuck on a chemistry assignment i need a way to include the elctron configuration and chemical properties of copper into a oral that is also a sales pitch.
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