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Formation of NaCl Lattice

In a structur...

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In a structure, oxide ions are cubical closest packed where as 1/8 of tetrahedral voids are occupied by A+2 cation and 1/2 of octahedral voids are occupied by B+3 cations. The formula for this compound is

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Q. In the structure of a compound, oxide ions are cubic close packed whereas

\frac{1}{8} t h

of tetrahedral voids are occupied by

A^{2 +}

cation and half of octahedral voids are occupied by

B^{3 +}

cations. The general formula of the compound having structure is:

Q. In a closed packed structure of mixed oxides, the lattice is composed of mixed oxides ions. One-eighth of tetrahedral voids are occupied by divalent cations

(A^{2 +})

while one half of octahedral voids are occupied by trivalent cations

(B^{3 +})

. The formula of mixed oxide is :

Q. In a compound, oxides ions form fcc lattice, whereas

\frac{1}{4} t h

of tetrahedral voids are occupied by cations

A^{2 +}

\frac{1}{8} t h

of octahedral voids are occupied by cations

B^{3 +}

ions. The simplest formula of the compound is

Q. In a closed packed structure of mixed oxides, the oxide ions are arranged in hcp array. One eight of tetrahedral voids are occupied by divalent cations (A) while one-half of octahedral voids are occupied by trivalent cations (B). What is the formula of the compound?

Q. In a metallic oxide, oxide ions are arranged in cubic close packing. One sixth of the tetrahedral voids are occupied by cations

P

and one third of octahedral voids are occupied by the cation

Q

. Deduce the formula of the compound.

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