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The ionic radii of A^(+) and B^(-) are ...

The ionic radii of `A^(+)` and `B^(-)` are `1.7 Å` and `1.8 Å` respectively . Find the co-ordination number of `A^(+)`

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Knowledge Check

  • The ionic radii for Na^(+) and Br^(-) ions a 1.012Å and 1.973Å respectively. What the coordination number of Na^(+) is predictaed on the basis of the radii ratio. (r_(+))/(r_(-)) ?

    A
    6
    B
    8
    C
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    D
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  • If ionic radic radii of Cs^(+) and Ce^(-) are 1.69Å and 181Å respectively, the edge length of unit cell is

    A
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    B
    `3.50Å`
    C
    `7.00Å`
    D
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  • Salt AB has a ZnS structure. The radius of A^(2+) and B^(2-) ions are 0.7 Å and 1.8 Å respectively. The edge length of AB unit cell is:

    A
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    B
    5.09 Å
    C
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    D
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    If the radius of Mg^(2+) ions, Cs^(+) " ions" , S^(2-) ions and Cl^(-) are 0.65 Å , 1. 69 Å , 1.84 Å and 1.81 Å respectively , calculate the coordination number of the cation in the crystals of MgS, MgO and CsCl.

    If the radius of Mg2+ ion, Cs^(+) ion, O^(2–) ion, S2^(–) ion and Cl^(–) ion are 0.65 Å, 1.69 Å, 1.40 Å, 1.84 Å, and 1.81 Å respectively. Calculate the co-ordination numbers of the cations in the crystals of MgS, MgO and CsCl.

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