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In a f.c.c. arrangement of A and B atoms...

In a `f.c.c.` arrangement of `A` and `B` atoms, where `A` atoms are at the corners of the unit cell and `B` atoms at the face `-` centres, one of the `A` atom is missing from one corner in each unit cell. The formula of compound is `:`

A

`A_(7) B_(3)`

B

`AB_(3)`

C

`A_(7) B_(24)`

D

`A_(7//8) B_(5)`

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Knowledge Check

  • In a face-centred cubic arrangement of A and B atoms, A atoms are at the corners of the unit cell and B atoms at the face centres. One of the A atoms is missing from one corner in the unit cell. The simplest formula of the compound is

    A
    `A_7B_3`
    B
    `AB_3`
    C
    `A_7B_(24)`
    D
    `A_(7//8)B_5`

  • In face centred cubic arrangement of A and B atoms, A atoms are at the corners of the unit cell and B atoms at the face centres. One of the A atoms is missing from one corner in the unit cell. The simplest formula of the compound is

    A
    `A _(7) B _(3)`
    B
    `AB _(3)`
    C
    `A_(7) B _(24)`
    D
    `A _(7) B _(5)`

  • In foc arrangement of A and B atoms, where A atoms are at the corners of the unit cell, B atoms at the face centres, two atoms are missing from two corners in each unit cell, then the simplest formula of the compound is

    A
    `A_7B_6`
    B
    `A_6B_7`
    C
    `A_7B_(24)`
    D
    `AB_4`

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