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Aluminium crystallizes in a cubic close ...

Aluminium crystallizes in a cubic close packed structure .Its metallic radius is 125pm. Calculate the edge length of unit cell.

Text Solution

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The length of the side of the unit cell of the metal is 353.55 pm
For fcc unit cell, ` a= ( 2 sqrt(2)) xxr `
`= 2 xx 1.414 xx 125`
`= 353.55 `pm.
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