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An element A and B constiture bcc type crystalline structure. Element A occupies body centre position and B is at the corners of cube. What is the formula of the compound ? What are the coordination numbers of A and B?

Answer» Correct Answer - Formula of the compound =AB
Coordination number of A= 8
coordination number of B= 8
Given : Crystalline structure is bcc type.
Atoms A are at 8 corners and atom B is at body centre.
`:. ` Number of atoms of A in a unit cell `= (1)/(8) xx 8=1`
Number of atom B in unit cell = 1
Since unit cell contains one atom each of A and B the formula of the compound is AB.
The coordination number of the an atom A at corner is 8.
The coordination number of an atom B at body centre is 8.


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