Constructive interference happens on the (211) set of planes in a BCC crystal structure. The interplanar spacing for the planes is 0.156 nm. What is the lattice parameter? O 0.3120 nm 0.2206 nm 0.3821 nm 0.9360 nm

Constructive interference happens on the (211) set of planes in a BCC crystal structure. The interplanar spacing for the planes is 0.156 nm. What is the lattice parameter? O 0.3120 nm 0.2206 nm 0.3821 nm 0.9360 nm

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

Chapter21: Structure And Bonding In Solids

Section: Chapter Questions

Problem 39P

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Group 14 Elements

The following elements come under group 14 of the periodic table.

Question

Constructive interference happens on the (211) set of planes in a BCC crystal structure. The interplanar spacing for
the planes is 0.156 nm. What is the lattice parameter?
0.3120 nm
0.2206 nm
0.3821 nm
0.9360 nm

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8.97 The doping of semiconductors can be done with enough precision to tune the size of the band gap in the material. Generally, in order to have a larger band gap, the dopant should be smaller than the main material. If you are a materials engineer and need a semiconductor that has lower conductivity thin pure silicon, what clement or elements could you use as your dopant? (You do not want either an n- or a p- type material) Explain your reasoning.
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