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![[Post New]](/templates/default/images/icon_minipost_new.gif) 4 Apr 2008 19:03:48 IST
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primitive cell:r=a/2
bcc:r=1.732*a/4
r+ + r-=a* sqrt3 /2
rank of cell(Z)= 1 for compounds ex:CsCl2
" = 2 for elements ex: gold,etc
fcc: r= sqrt2*a/4
r+ + r- =a/2
Z= 4
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VARSHA KRISHNAN....
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IIT is always a word which rises E thru' d body. But 2 achieve it U hav 2 drain out d entire E out of the body....
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this reply: 7 points
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