The Cl− ions in the of NaCl lattice structure are present at:
A
Corners of the cube
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B
Centres of faces of the cube
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C
Corners as well as face centres of the cube
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D
Edge centres of the cube
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Solution
The correct option is C Corners as well as face centres of the cube In NaCl,Cl− ions forms fcc structure lattic. Thus, Cl− present at the corners and face centres of the cube.
Here, Na+ ions occupies all the octahedral voids. The octahedral voids are present at the edge centres and body centre of the unit cell.
The coordination number of NaCl is 6:6