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What is unit cell of a crystal lattice? ...

What is unit cell of a crystal lattice? What parameters are used to characterise a unit cell?

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The parameters which are used to characterise a unit cell are - (i) edge lengths, a, b and c. These edge may or may bot be equal or mutually perpendicular. (ii) Angles between the pair of edges are represented by `alpha,betaandgamma.alpha,betaandgamma` are the opposite angle of sides a, b and c respectively.
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CHHAYA PUBLICATION-SOLID STATE-WARM UP EXERCISE
  1. A very hard crystalline solid that melts at very high temperature, can...

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  2. Define the terms (a) crystal (b) crystal lattice ( c) lattice point.

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  3. What is unit cell of a crystal lattice? What parameters are used to ch...

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  4. Define (a) simple or primitive unit cell (b) body-centred unit cell ( ...

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  5. Which type of unit cells are called non-primitive unit cells?

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  6. How many types of two-dimensional lattices are possible?

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  7. How many types of crystal systems are there? Name them.

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  8. How many Bravais lattice are there? How many of these do belong to the...

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  9. Which crystal systems have the following axial characteristics? (i) a ...

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  10. Which crystal system has all possible types of unit cells, i.e., primi...

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  11. Name a compound and an element whose crystals consist of cubic unit ce...

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  12. Name a compound and an element whose crystals consist of hexagonal uni...

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  13. Calculate the number of particles per unit cell of three possible cubi...

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  14. Calculate the number of particles per unit cell of the following two-d...

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  15. The given figure represents the unit cell of a solid with a cubic crys...

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  16. Molar mass of an element is Mg*mol^(-1). The element crystallises in a...

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  17. A metal (molar mass = 108 g*mol^(-1)) crystallises in a cubic structur...

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  18. A cubic unit cell contains one atom at each of its corner and two atom...

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  19. A crystalline compound formed by elements A and B has facecentred cubi...

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  20. What is packing efficiency of a unit cell? Show that the packing effic...

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