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Introduction to Geometric Isomerism

MgFe2O4 has s...

Question

MgFe2O4 has spinel structure, then the percentage of tetrahedral voids and the octahedral voids occupied are respectively

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Q. A compound with formula

A B_{2} O_{4}

adopts a crystal structure in which

O^{2 -}

ions forms ccp arrangement.

A^{2 +}

ions occupy octahedral voids while

B^{3 +}

ions are distributed equally between tetrahedral and octahedral voids. The fraction of octahedral and tetrahedral voids occupied respectively are:

Q. A compound with formula

A B_{2} O_{4}

adopts a crystal structure in which

O^{2 -}

ions forms ccp arrangement.

A^{2 +}

ions occupy octahedral voids while

B^{3 +}

ions are distributed equally between tetrahedral and octahedral voids. The fraction of octahedral and tetrahedral voids occupied respectively are:

O^{2 -}

ions are arranged in ccp in a spinel structure.

A^{2 +}

ions occupy one-eighth of tetrahedral voids and

B^{+}

ions occupy half of octahedral voids. The void volume of unit cell is

0.11

. Find the value of positive ions

A

Q. In a compound

X Y_{2} O_{4}

oxide ions are arranged in ccp structure. Cation X are present in octahedral voids and cation Y are equally distributed between octahedral and tetrahedral voids. The fraction of the octahedral voids occupied is:

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