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Which of the following option{s) is/are incorrect if an arrangement is formed by two different atoms A and B such that B forms cubic close packing and A atoms occupy all the octahedral voids without causing any distortions.
(Given: Edge length of cube $= a$ Radius of atom A $= r_{a}$ Radius of atom $B = r_{b}]$

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$4 r_{b} = \sqrt{2 a}$

$r_{a} + r_{b} = \sqrt{2} \cdot r_{a}$

The arrangement can be viewed as A atom forming cubic close packing and B atoms occupying all octahedral void without any distortions.

Distance between two nearest atoms of A will be equal to twice the radius of atom of B.

answer is C.

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Detailed Solution

Given;

Atom A- occupy all the octahedral voids without causing any distortions.

Atom B- forms cubic close packing

This arrangement can be seen as A atom forming cubic close packing and B atoms occupying all octahedral void without any distortions.

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