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In calcium fluoride, having the fluorite...

In calcium fluoride, having the fluorite structure, the coordination numbers for calcium ion `(Ca^(2+))` and fluoride ion `(F^-)` are

A

4 and 2

B

6 and 6

C

8 and 4

D

4 and 8

Text Solution

Verified by Experts

The correct Answer is:
C
In fluorite structure, `Ca^(2+)` ions are in the facecentred cubic arrangement. Each `Ca^(2+)` is connected to `4 F^(-)` ions below it and to another set of `4 F^-` ions above it i.e. `Ca^(2+)` has a coordination number of 8 and each `F^(-)` ion has a coordination number 4.
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Knowledge Check

  • In calcium fluoride, having the fluorite structure, the corrdination numbers for calcium ion (Ca^(2+)) and fluoride ion (F^(-)) are

    A
    4 and 2
    B
    6 and 6
    C
    8 and 4
    D
    4 and 8

  • In calcium, fluoride having the florite structures. The coordination number for calcium ion (Ca^(2+)) and fluoride ion (F^(-)) are

    A
    `4` and `2`
    B
    `6` and `6`
    C
    `8` and `4`
    D
    `4` and `8`

  • In the fluorite structure, the coordination number of cation is:

    A
    4
    B
    6
    C
    8
    D
    3

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