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Solid State Test - 12

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Solid State Test - 12
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  • Question 1
    4 / -1
    The radius of Na+ and Cl- ions are 95 pm and 181 pm respectively. The edge length of NaCl unit cell is
    Solution

  • Question 2
    4 / -1
    Sodium metal crystallises at room temperature in a body centred cubic lattice with a cell edge a = 4.29 Å . The radius of sodium atom is
  • Question 3
    4 / -1
    A metallic element has a cubic lattice. Each edge of the unit cell is 2 Å. The density of the metal is 2.5 g cm-3. The unit cells in 200 g of metal are
    Solution

  • Question 4
    4 / -1

  • Question 5
    4 / -1
    Lithium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of the lithium will be:
    Solution

  • Question 6
    4 / -1
    In orthorhombic, the value of a, b and c are respectively 4.2 Å , 8.6 Å and 8.3 Å. Given the molecular mass of the solute is 155 g mol-1 and that of density is 3.3 g/cc, the number of formula units per unit cell is
    Solution

  • Question 7
    4 / -1
    Which one of the following defects in the crystals lowers its density ?
  • Question 8
    4 / -1
    If we mix a pentavalent impurity in a crystal lattice of germanium, what type of semiconductor formation will occur?
  • Question 9
    4 / -1
    Which of the following has the highest value of energy gap?
  • Question 10
    4 / -1
    Which kind of defect is shown by the given crystal?

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