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Coordination Number

A compound is...

Question

A compound is formed by elements 'a' and 'b' has a cubic structure in which 'a' atoms are at corners of the cube and 'b' atoms are at the face centres. Derive the formula of the compound.

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Solution

Effective number of $A, Z_{A} = \frac{1}{8} \times 8 = 1$
Effective number of $B, Z_{B} = \frac{1}{2} \times 6 = 3$
Formula of compound $\Rightarrow A B_{3}$

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