band gap on insulator i understand the band gap difference between conductor, insulator, and semiconductor, but there is this question lingering in my head, why does insulator have big band gap? what does make it big? the electrons? could you also give me some example of why metal is conductor using molecular orbital and why insulator are insulator using molecular orbital

band gap on insulator i understand the band gap difference between conductor, insulator, and semiconductor, but there is this question lingering in my head, why does insulator have big band gap? what does make it big? the electrons? could you also give me some example of why metal is conductor using molecular orbital and why insulator are insulator using molecular orbital

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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a. What is the material that can naturally have electrons able to move across the band gap when supplied with additional energy (for example, pure silicon)? Oinsulator intrinsic semiconductor extrinsic semiconductor metal b. What is the name of the material that results from the addition of dopants to pure element in order for it to conduct electricity (for example, 0.0001% Al in Si)? O insulator O intrinsic semiconductor extrinsic semiconductor O metal
A substance has a band gap of 0.85 eV at 273 K. Is this substance best classified as an insulator, a semiconductor, or a metal?
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Sketch valence and conductive bands for semiconductor, insulator and metal. How dopant in extrinsic semiconductor influence on the difference in energy between valence and conductive bands.
5. Cadmium sulfide, CdS, is used as a photoconductor in light meters. The band gap is about 2.4 eV. What is the greatest wavelength of light that can promote an electron from the valence band to the conduction band in cadmium sulfide?
Simple cubic cell can be generated be generated by placing a layer above and below this layer in such a way that spheres in one layer are directly over the spheres in the layer below it. The corner atoms touch one another. State materials that have the SCC structure.
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Bellow are listed the atomic weight, density and atomic radius for three hypothetical alloys. Atomic Radius Atomic Weight Density Alloy (e mol) Structure (am) 43.1 6.4 0.122 BCC 184.4 12.3 0.146 SC 91.6 9.6 0.137 ВсС Match each of the alloys presented below with the appropriate family of close packed directions characteristic of its structure: