Homework Help: Chemistry

Posted by kooler on Monday, February 15, 2010 at 4:43am.

Find the unit cell (simple, bcc, fcc), type of holes where the smaller ions are found (tetrahedral, octrahedral, cubic), and number of cations and anions per unit cell for the following compounds:
CdSe
CsI
Li2O
KBr
NaCl
ZnS(I)
i did this and i got most of my answers wrong!!!
and I got this but they're wrong so any help would be great!:
CdSe - fcc, tetrahedral, 3,3
CsI - fcc, octahedral,1,1
Li2O - sc, tetrahedral, 2,2
KBr - bcc, tetrahedral,4,8
NaCl - bcc, cubic,1,2
ZnS(I) - sc, cubic,1,1

Chemistry - Christ lover, Monday, February 15, 2010 at 5:44pm
CdSe: fcc, tetra, 4, 4
CsI: sc, cubic, 1,1
Li2O: fcc, tetra, 8, 4
KBr: fcc, octa, 4, 4
NaCl: fcc, octa, 4, 4
ZnS: fcc, tetra, 4, 4
Chemistry - JJ, Monday, February 15, 2010 at 5:47pm
Christ lover, you're a life saver!!!

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