Q.

A metal has bcc structure. If the atomic radius of the metal  is 180pm, the edge length of unit cell would be

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a

207.9pm

b

415.7pm

c

831.4pm

d

324.9pm

answer is B.

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Detailed Solution

For a bcc metallic solid,  r=3  4 a ; Given, r=180pm; a=  43×180pm=415.7pm
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