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Home » In the cubic close packing, the unit cell has ________.
In the cubic close packing, the unit cell has ________.
CBSE | Chemistry | Class 12 | Exercise 1 | NCERT Exemplar | Solid State
In the cubic close packing, the unit cell has ________.

(i) 4 tetrahedral voids each of which is shared by four adjacent unit cells.

(ii) 4 tetrahedral voids within the unit cell.

(iii) 8 tetrahedral voids each of them which are shared by four adjacent unit cells.

(iv) 8 tetrahedral voids within the unit cells.

 

Correct Answer: (iv) 8 tetrahedral voids within the unit cells.

Explanation: The smallest group of atoms represents the perfect balance of crystals and through cell units the whole cube is made up of three times the size of a cube. Cubic closed packaging is like a fcc structure.

Number of tetrahedral voids = 2n

Number of tetrahedral voids = 2 (4)

Number of tetrahedral voids = 8

i

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