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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: luketapis on August 12, 2012, 03:35:05 PM

Title: face centred cubic
Post by: luketapis on August 12, 2012, 03:35:05 PM

A metal crystallises in the face centred cubic (fcc) system and the edge of the unit
cell is 503 pm. Calculate the atomic radius of the metal.

Ok, so It is not so difficult, but I have one question. In primitive cubic r=1/2 d (d-diagonal of cubic) because there is 1 atom in cubic, in bcc r=1/4 d, but what is r in fcc?

Title: Re: face centred cubic
Post by: Sophia7X on August 12, 2012, 08:33:37 PM

Check out the explanation for problem 1. http://www.chemteam.info/Liquids&Solids/WS-fcc-AP.html

Title: Re: face centred cubic
Post by: luketapis on August 12, 2012, 08:46:46 PM

thanks Sophia