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The Solid State
Question
Aluminum crystallizes in an fcc structure. Atomic radius of the metal is 125 pm. What is the length of the side of the unit cell of the metal?
Solution
Aluminum crystallizes in FCC structure atomic radius (r) = 125 pm
Length of the side of the unit cell in FCC structure, 
Therefore a= 2 x 1.414 x 125
a = 353.5 pm
Some More Questions From The Solid State Chapter
Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show clevage property?
Classify the following solids in different categories based on the nature of intermolecular forces operating in them:
Potassium sulphate, tin, benzene, urea, ammonia, water, zinc
sulphate, graphite, rubidium, argon, silicon carbide.
Solid A is a very hard, electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it?
Ionic solids conduct electricity in liquid state but not in solid state. Explain.
What type of solids are electrical conductors, malleable and ductile?
Give the significance of a 'lattice point'.
Name the parameters that characterize a unit cell.
Distinguish between Hexagonal and monoclinic unit cells.
Distinguish between Face-centred and end-centred unit cells.
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Mock Test Series
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