Ch.12 - Solids and Solid-State Materials
Chapter 12, Problem 18b
Identify each of the following kinds of packing: (b)
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Related Practice
Textbook Question
The molecular orbital diagram of a doped semiconductor is
shown below. If the semiconductor is silicon, does the diagram
represent n-type or p-type doping and which of the
following elements could be dopant? (LO 12.9)
(a) n-type, As (b) n-type, Ga
(c) p-type, As (d) p-type, Ga
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Textbook Question
If the band-gap energy of a gallium phosphide (GaP) semiconductor
is 222 kJ/mol, calculate the wavelength of light
emitted in a GaP light-emitting diode (LED). (LO 12.11)
(a) 186 nm (b) 245 nm
(c) 539 nm (d) 854 nm
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Textbook Question
A superconductor is a material that loses all electrical resistance below a characteristic temperature called the superconducting transition
temperature. Which graph represents the behavior of a superconductor? (LO 12.13)
(a)
(b)
(c)
(d)
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Textbook Question
Identify each of the following kinds of packing: (d)
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Textbook Question
The following compound undergoes a phase transition from the solid to the smectic liquid crystal phase at 121 °C. Upon further heating, the compound undergoes another transition to liquid phase at 131 °C.
(b) Which image represents the arrangement of molecules at 135 °C?
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Textbook Question
Titanium oxide crystallizes in the following cubic unit cell:
(b) What is the formula of titanium oxide?
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