﻿ In a crystalline solid, having formula AB2O4, oxide ions are arranged in cubic close packed lattice while cations A are present in tetrahedral voids and cations B are present in octahedral voids. The percentage of tetrahedral voids occupied by A is      : Kaysons Education

# In A Crystalline Solid, Having Formula AB2O4, Oxide Ions Are Arranged In Cubic Close Packed Lattice While Cations A Are Present In Tetrahedral Voids And Cations B Are Present In Octahedral Voids. The Percentage Of Tetrahedral Voids Occupied By A Is

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## Question

### Solution

Correct option is

12.5%

In a cubic close packed lattice of oxide ions, there would be two tetrahedral and one octrahedral void per oxide ion.

Since, the formula shown the presence of 4 oxide ions, the number of tetrahedral voids is eight and that of octahedral voids is four.

Out of the eight tetrahedral voids one is occupied by A.

∴  Percentage of tetrahedral voids occupied

= 12.5%.

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