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Edge length of M^(+)X (fcc structure) is...

Edge length of `M^(+)X` (fcc structure) is `7.2Å`. Assuming (`M^(+) - X^(-))` contact along the cell edge, radius of `X^(-)` ion is (`r_(M+) = 1.6Å):`

A

`2.0Å`

B

`5.6Å`

C

`2.8Å`

D

`38Å`

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Edge length of M^(+)X^(-) (fcc structure) is 7.2 Å . Assuming M^(+)X^(-) contact along the cell edge, find the radius of X^(-) ion ln Å. (r_(M)^(+)=1.6 Å)

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Knowledge Check

  • Edge length of M^(+)X^(-) (fcc structure) is 7.2^(@)A . Assuming M^(+)-X^(-) contact along the cell edge, radius of X(-) ion is (r_(M+)=1.6^(@)A) :

    A
    `2.0^(@)A`
    B
    `5.6.^(@)A`
    C
    `2.8.^(@)A`
    D
    `3.8.^(@)A`

  • The edge length of LiCl (NaCl structure) unit cell 514 pm. Assuming anion - anion contact, the ionic radius of Cl^(-) ion is

    A
    128.5 pm
    B
    257 pm
    C
    181.7 pm
    D
    None of the above

  • The edge length of LiCl (NaCl structure) unit cell is 514 pm. Assuming anion-contact, the ionic radius of Cl^(-) ion is

    A
    128.5 pm
    B
    257 pm
    C
    181.7 pm
    D
    None of these

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