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What type of vacancy defect is shown by ...

What type of vacancy defect is shown by a crystal of sodium chloride? 

Text Solution

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i) Schottky defect is shown by a crystal of sodium chloride, because this defect is found in ionic solids having similar size of cotions and anions with high coordination number.
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What type of stoichiometric defect is shown by AgCl ?

Examine the given defective crystal and {:(A^(+),B^(-),A^(+),B^(-),A^(+)),(B^(-),0,B^(-),A^(+),B^(-)),(A^(+),B^(-),A^(+),0,A^(+)),(B^(-),A^(+),B^(-),A^(+),B^(-)):} Answer the following questions : (i) What type of stoichiometirc defect is shown by the crystal ? (ii) How is the density of the crystal affected by this defect ? (iii) What type of ionic substances show such defect ?

Knowledge Check

  • Schottky defect in a crystal is observed when

    A
    An ion leaves its normal site and occupies an interstitial site
    B
    Unequal number of cations and anions are missing from the lattice
    C
    No ion is missing from its lattice site
    D
    Equal number of cations and anions are missing from the lattice

  • Schottky defect in a crystal is observed when,

    A
    Unequal number of cations and anions are missing from the lattice.
    B
    Equal number of cations and anions are missing from the lattice.
    C
    An ion leaves its normal site and occupies an interstitial site.
    D
    No ion is missing from its lattice site

  • Schottky defect ina crystal is observed when

    A
    unequal number of cations and anions are missing from the lattice
    B
    equal number of cations ans anions are missing from the lattice
    C
    an ion leaves its normal site and occupies an intersitial site
    D
    no ions is missing from its lattice site .

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    Give any two uses of sodium chloride.

    What type of stoichiometric defect is shown by AgBr and AgI ?

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    Which type of Stoichmetric defect is shown by the following solids? a) AgCl b) KCl

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