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In the mineral, spinel, having the formula MgAl2O4, oxide irons are arranged in the cubic close packing. Mg2+ions occupy the tetrahedral voids while Al3+ions occupy the octahedral voids. (i) What is the percentage of tetrahedral voids occupied by Mg2+ions? (ii) What is the percentage of octahedral voids occupied by Al3+ions?

aditya kashyap

12 Years agoGrade upto college level

3 Answers

Kshitiz

9 Years ago

12.5% tetrahedral voids and 50% octahedral voids gehsjjsksksjdhdkkshshsjjshshshshshhsjsjshshdhjskshshsujshdhdududjjsjsjdjdjhdhsjsjsjsisidjjdjdhdjdjdjdhhdhdjdjdjdjhfhfhfjjdndhdhdjjdjdjdjd

Nitin

8 Years ago

According to formula MgAl2O4 oxygen contains 4 atoms that means it is forming CCP or FCC also there is only 1 mg atom and 2 Al atom.Z=4Octahedral voids=4Tetrahedral voids=8As mg is occupying tetrahedral voids so percentage = (1/8)×100=12.5%.And percentage of octahedral voids occupied by Al atoms=(2/4)×100=50%.

Amitesh Kumar Singh

4 Years ago

In the mineral spinel, MgAl

2

O

4

oxide ions formed ccp lattice Mg

+2

ions occupy tetrahedral voids while Al

+3

ions occupy the octahedral voids then the percentage of tetrahedral, octahedral voids occupied by Mg

+2

and Al

+3

ions respectively

Then find 0.1(3p+4q)

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