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Quiz 1 soln 5 - e Shown below is a unit cell of zincblende...

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Unformatted text preview: e.) Shown below is a unit cell of zincblende, which is a crystalline form of ZnS. i.) ii.) iii.) iv) What is the co-ordination number of the Zn ion in this structure? Answers... "L." What is the co—ordination number of the S ion in this structure? Answer.'... "Li'. How many formula units are there per unit cell for this structure? "0 0‘. Stvions = (8V"x)“'((’“"z) ‘ Ll No 0‘, in“ ions 1- LHQ «'- ‘1 in“$q ‘3 142.6 Answer:.........‘:*.. smuimnumhu The zincblende structure can be described as: a.) an FCC array of anions with cations in the octahedral interstices b.) an FCC array of anions with cations in the tetrahedral interstices c.) an HCP array of anions with cations in the octahedral interstices d.) an HCP array of anions with cations in the tetrahedral interstices Answer (circle one) a.) c.) d.) ...
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