Aluminium crystallizes in a cubic close packed structure. Its metallic – InterviewSolution

1.	Aluminium crystallizes in a cubic close packed structure. Its metallic radius is 125pm. Calculate the edge length of unit cell.
Answer» SOLUTION :`"GIVEN,Radius (r ) = 125 pm"` `"Edge LENGTH of UNIT cell (a)"=?` Since aluminium crystallizes in Face CENTERED cubic `r=(asqrt2)/(4)(or) r=(a)/(2sqrt2)` `a=rxx2xxsqrt2` `=125xx2xx1.414` `a=353.5" pm"`

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