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The Solid State
Question
Distinguish between Face-centred and end-centred unit cells.
Solution
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(ii) Face centered unit cell |
End-centered unit cell |
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It contains one particle present at the centre of its each face, besides the ones that are at its corners. |
In this unit cell, one constituent particle is present at the centre of any two opposite faces besides the ones present at its corners. |
Some More Questions From The Solid State Chapter
Why do solids have a definite volume?
Classify the following as amorphous or crystalline solids: Polyurethane, naphthalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.
Why is glass considred a super-cooled liquid?
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.
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Mock Test Series
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