Describe the nature of electrical conduction in (a) germa-nium doped with indium and (b) cadmium sulfide dopedwith arsenic.

(a) Germanium doped with indium: When germanium is doped with indium, it creates new levels at the…

Answered: Describe the nature of electrical…

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter22: Inorganic Materials

Section: Chapter Questions

Problem 32P

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Similar questions

The only alkali metal that reacts with oxygen to give a compound with the expected stoichiometry is lithium,which gives Li2O.In contrast,soduim reacts with oxygen to give Na2O2,and the heavier alkali metals form superoxides.Explain the difference in stoichiometries of these products
(a) Mention the optimum conditions for the industrial manufacture of ammonia by Haber’s process. (b) Explain the following giving appropriate reasons: (i) Sulphur vapour exhibits paramagnetic behaviour: (ii) Red phosphorus is less reactive than white phosphorus
Some of the water on earth was formed by the interaction ofiron and silicon oxides and methane. Write the balancedequation for the reaction of ferric oxide and methane.
Give short answers to the following.a. What is the correlation of ionization potential and atomic number explain.b. Give three allotropic forms of carbon with structures and properties.c. Explain the industrial preparation of nitric acid.d. Explain silicate with structure and examples.e. What is the types og glass. give detail.
(a) What are the different oxidation states exhibited by the lanthanoids? (b) Write two characteristics of the transition elements. (c) Which of the 3d-block elements may not be regarded as the transition elements and why?
Several transition metals are prepared by reduction of themetal halide with magnesium. Titanium is prepared by the Krollmethod, in which ore (ilmenite) is converted to the gaseous chlo-ride, which is then reduced to Ti metal by molten Mg. Assuming yields of 84% for step 1 and 93% for step 2,and an excess of the other reactants, what mass of Ti metal canbe prepared from 21.5 metric tons of ilmenite?
The U.S. Department of Energy has set the benchmark of 6% H by weight for an acceptable hydrogen storage material. Consider the following possible metals that form hydride phases: NaAlH4, LiAlH4, LaNi5H6, and TiFeH2. Which meet the DOE standard.
Why is beryllium carbonate unusually unstable thermally as compared to the other carbonates of this group?
Account for the relative band gap energies of semiconductors interms of periodic trends?
The prefix eka- comes from the Sanskrit word for “one.”Mendeleev used this prefix to indicate that the unknownelement was one place away from the known element thatfollowed the prefix. For example, eka-silicon, which we nowcall germanium, is one element below silicon. Mendeleevalso predicted the existence of eka-manganese, which was notexperimentally confirmed until 1937 because this element isradioactive and does not occur in nature. Based on the periodictable shown in Figure 7.1, what do we now call the elementMendeleev called eka-manganese?
The diagram below shows the variation in boilng point of the hydrides of Group V elements Account for the regular increase in boilng point from PH3 to SbH3 Why is the boilng point of NH3 exceptionally high?

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Describe the nature of electrical conduction in (a) germa- nium doped with indium and (b) cadmium sulfide doped with arsenic.