The Solid State
Telangana Open School (TOSS) · Class 12 · Chemistry
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Quick Quiz: The Solid State
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Which of the following is a characteristic property of solids?
What type of close packing is observed in two dimensions when each sphere is in contact with six others?
Which of the following solids has a long-range order in particle arrangement?
What is the coordination number in a hexagonal close-packed (hcp) structure?
Sample Questions
Which type of solid is iodine an example of?
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Molecular solid
Iodine consists of I₂ molecules held together by weak van der Waals forces, making it a molecular solid with low melting point.
What is the shape of voids formed in a two-dimensional hexagonal close-packed layer?
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Triangular
In a 2D hexagonal close-packed layer, unoccupied spaces between spheres are triangular in shape, called trigonal voids.
Which of the following is an example of an amorphous solid?
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Glass
Glass lacks a regular long-range arrangement of particles and softens over a range of temperatures, making it amorphous.
What is the melting point behavior of amorphous solids?
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They melt over a range of temperatures
Amorphous solids do not have a definite melting point due to irregular particle arrangement and melt gradually over a temperature range.
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