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STATEMENT -1 : For fluorite structure ,...

STATEMENT -1 : For fluorite structure , the `F^(-)` ions occupy tetrahedral void and `Ca^(2+)`
ions in ccp
STATEMENT-2 : The radius ratio of fluorte structure is 0.414

A

If both the statement are TRUE and STATEMENT -2 is the correct explanation of STATEMENT -1

B

If both the statement are TRUE and STATEMENT -2 is NOT the correct explanation of STATEMENT -1

C

If STATEMENT -1 is the correcct and TRUE and STATEMENT -2 is FALSE

D

If STATEMENT -1 is the correcct and FALSE and STATEMENT -2 is TRUE

Text Solution

Verified by Experts

The correct Answer is:
C
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STATEMENT -1 : In NaCl structure , Na^(+) ion occupy octahedral holes and Cl^(-) ions occupy ccp. STATEMENT -2 : The distance of the nearest neighours in NaCl structure is a//2 where a is the edge length of the cube .

Statement-1:In NaCl structure , Na^+ ions occupy octahedral holes and Cl^- ions show ccp like packing Statement-2: The distance of the nearest neighbours in NaCl structure is a/2 where a is the edge length of the cube.

Knowledge Check

  • Statement-1:For NaCl structure, Cl^- ions occupy corners and face centre and Na^+ ions occupy edge centres and body centre. Statement-2:The radius ratio of NaCl structure varies from 0.414 to 0.732

    A
    Statement-1 is true, statement-2 is true, statement-2 is a correct explanation for statement-1
    B
    Statement-1 is true, statement-2 is true, statement-2 is not correct explanation for statement-1
    C
    Statement-1 is true, statement-2 is false
    D
    Statement-1 is false, statement-2 is true

  • In Zinc blende , the percentage of tetrahedral voids occupied by Zn^(2+) ions is :

    A
    `25%`
    B
    `50 %`
    C
    `75 %`
    D
    `100 %`

  • In the fluorite structure, the coordination number of Ca^(2+) lon is:

    A
    4
    B
    6
    C
    8
    D
    3

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    MgAl_(2)O_(4) , is found in the Spinal structure in which O^(2-) ions consititute CCP lattice, Mg^(2+) ions occupy 1/8th of the Tetrahedral voids and Al^(3+) ions occupy 1.2 of the Octahedral voids. Find the total +ve charge contained in one unit cell

    In Zinc blende structure, Zn^(+2) ions are present in alternate tetrahedral voids and S^(-2) in ccp. The coordination number of Zn^(+2) and S^(-2) are respectively

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