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CaBr has bcc structure edge length 4.3 Å...

CaBr has bcc structure edge length `4.3 Å.` The shortest inter ionic distance in between `Cs ^(+) and Br ^(-)` is

A

`4. 3 Å`

B

`7. 44 Å`

C

`1. 86 Å`

D

`3. 72 Å`

Text Solution

Verified by Experts

The correct Answer is:
D
In BCC structure the cations and anions touch along the body diagonal
`2 ( r _(CS) + r _(Br ^(-))) = sqrt3 xx 4. 3` (Body Diagonal `= sqrt3a`)
`r _(c S) + r _( Br ^(-)) = ( 1 . 7 32 xx 4. 3)/(2) = 3. 72 Å`
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Knowledge Check

  • CsBr has bcc structure with edge length 4.3 Å. The shortest inter-ionic distance in between Cst and Br is

    A
    3.72 Å
    B
    1.86 Å
    C
    7.44 Å
    D
    4.3 Å

  • CsBr has BCC structure with edge length 4.3 pm. The shortest interionic distance in between Cs^(+) and Br^(-) is :

    A
    3.72 pm
    B
    1.86 pm
    C
    7.44 pm
    D
    4.3 pm

  • CsBr has BCC structure with edge length 4.3 pm. The shortest interionic distance in between Cs^(+) and Br^(-) is:

    A
    3.72 pm
    B
    1.86 pm
    C
    7.44 pm
    D
    4.3 pm

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