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Relation Between r and a

Tungsten crys...

Question

Tungsten crystallizes in BCC unit cell. If the edge length of unit cell is $320$ pm calculate the radius of tungsten atom.

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Solution

In a BCC radius $= \frac{e d g e - l e n g h t}{2 \sqrt 2}$
$r a d i u s = \frac{320}{2 \sqrt 2}$
$= \frac{160}{1.414}$
$= 113.15 p m$
Therefore radius of tungsten atom is $113.15 p m .$

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