Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) In an fcc 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 - Sarthaks eConnect
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In an fcc 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 :

In an fcc 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`

Solution

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Best answer

Since there are six atoms (A) in the corner of th unit cell, the contribution of atoms in 1 unit cell is `6/8`. Since 3 face-centered atoms (B) contribute to one unit cell, the formula is

A6/8B3 or A6B24 or AB4

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