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In a defective crystal of $Fe$ which shows bee arrangements, some of the unit cells have following arrangement. Apart from these there are no other defects. Identify the option which is correct.

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Effective number of atoms in the complete crystal structure will be 1 instead of 2 .

Density of defective crystal will lie in between half the original density to original density.

The crystal will now have structure similar to simple cubic.

Co-ordination number of atoms will become 6.

answer is B.

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Detailed Solution

In this picture a defective crystal of $Fe$ which shows bee arrangements, some of the unit cells have following arrangement.

$Z = 1 Z \neq 2$

the option B is correct it , said that Density of defective crystal will lie in between half the original density to original density.

$d = \frac{2 \times M}{a^{3} \times N_{A}}$

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