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Iron crystallises in a body centred cubi...

Iron crystallises in a body centred cubic structure. Calculate the radius of iron atom if edge length of unit cell is 286 pm.

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The correct Answer is:
123.84 pm
Edge length (a) = 286 pm. For a bcc unit cell,
Atomic radius `(r)=(sqrt3a)/(4)=(1.732xx("286pm"))/(4)=123.84"pm."`
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