Textbook Question
Indicate if each solid forms an n-type or a p-type semiconductor. a. germanium doped with gallium b. silicon doped with arsenic
13. Liquids, Solids & Intermolecular Forces
Crystalline Solids
Multiple Choice
Which of the following best describes the difference between a crystalline solid and an amorphous solid?
A
Amorphous solids conduct electricity better than crystalline solids.
B
Crystalline solids are always softer than amorphous solids.
C
Amorphous solids have a definite melting point, while crystalline solids melt over a range of temperatures.
D
Crystalline solids have a long-range, repeating order in their atomic arrangement, while amorphous solids lack this regular structure.
Verified step by step guidance1
Understand the key difference between crystalline and amorphous solids lies in their atomic or molecular arrangement.
Recall that crystalline solids have a long-range, repeating, and highly ordered structure, meaning their atoms are arranged in a consistent pattern extending throughout the material.
Recognize that amorphous solids lack this long-range order; their atoms or molecules are arranged more randomly, similar to liquids but without flow.
Note that this structural difference affects physical properties such as melting behavior: crystalline solids have a sharp, definite melting point, while amorphous solids soften over a range of temperatures.
Evaluate the given options by comparing them to these characteristics to identify the statement that correctly describes the fundamental structural difference.
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