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Question

A compound is formed by elements, A and B. This crystallises in the cubic structure where A atoms occupies the corners of the cube and B atoms are at the body centers. The simplest formula of the compound is :

A
A8B4
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B
AB6
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C
AB
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D
A6B
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Solution

The correct option is B AB
In simple cube, contribution of one corner =18
Total number of corner in a cube is 8.
So, effective number of atoms per unit cell =18×8=1
Number of body centers in simple cubic =1
Number of atoms in body center =1
So, the simplest formula is AB.

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