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Which of the following options(s) is/are incorrect. with respect to cubic crystals of identical particles?

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If the radius of particle is $\sqrt{6} Å$ then the edge-length of unit cell may be $4 \sqrt{2} Å$ .

The coordination numbers for particle at bod centre and particle at comer in BCC crystal 1 different.

If the radius of particle is $2 \sqrt{2} Å$ , then the length of body diagonal in FCC unit cell is $8 \sqrt{2} Å$

Cubic crystal may have end centered unit cell.

answer is B, C, D.

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Detailed Solution

Here, relation of radius and side,

$2 r = a$

When radius is $\sqrt{6} Å$ , then the edge-length of unit cell may be $4 \sqrt{2} Å$ .

Here, only this statement is correct and other are incorrect.

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