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CBSE - XII Science - Chemistry - The Solid State

In the normal spinel structure, the oxide ions are arranged in CCP pattern. The Zn2+ ions occupy one eighth of the tetrahedral holes and one half of the octahedral voids are occupied by Al3+. Give the formula of the spinel.

Asked by 29th July 2012, 3:47 PM
Answered by Expert


Since Zn2+ atoms occupy one-eighth of all the tetrahedral voids and the Al3+ atoms occupy half of all the octahedral voids in the oxygen lattice.  Thus the formula becomes "ZnAl2O4"

Answered by Expert 1st August 2012, 10:17 AM

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