in a crystalline solid having formula A2B,anions B are arranged cubic close packing lattice and cation A are equally distributed between octahedral voids and tetrahedral voids
a)what % of octahedral voids is occupied?
b)what %of tetrahedral voids is occupied?

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Solution

In this A2B type structure (or antifluorite structure), Anions (B) have ccp arrangement. Cations (A) occupy all the tetrahedral voids. This structure has 4 : 8 coordination.
Percentage of tetrahedral voids occupied =8/8 Ã— 100 = 100%
Percentage of octahedral voids occupied = 2/4 Ã— 100 = 50%

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in a crystalline solid having formula A2B,anions B are arranged cubic close packing lattice and cation A are equally distributed between octahedral voids and tetrahedral voidsa)what % of octahedral voids is occupied?b)what %of tetrahedral voids is occupied?

In this A2B type structure (or antifluorite structure), Anions (B) have ccp arrangement. Cations (A) occupy all the tetrahedral voids. This structure has 4 : 8 coordination.Percentage of tetrahedral voids occupied =8/8 Ã— 100 = 100%Percentage of octahedral voids occupied = 2/4 Ã— 100 = 50%

in a crystalline solid having formula A2B,anions B are arranged cubic close packing lattice and cation A are equally distributed between octahedral voids and tetrahedral voids
a)what % of octahedral voids is occupied?
b)what %of tetrahedral voids is occupied?

In this A2B type structure (or antifluorite structure), Anions (B) have ccp arrangement. Cations (A) occupy all the tetrahedral voids. This structure has 4 : 8 coordination.
Percentage of tetrahedral voids occupied =8/8 Ã— 100 = 100%
Percentage of octahedral voids occupied = 2/4 Ã— 100 = 50%