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In spinel structure, O ^(2-) ions are cu...

In spinel structure, `O ^(2-)` ions are cubic-closed packed, whereas 1/8th of the tratrhedral holes are occupled by `A ^(2+)` cations and 1/2 of the octahedral holes are occupied by cations `B^(3+).` The general formula of this compound is

Text Solution

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The correct Answer is:
`AB_(2)O_(4)`
Let number of `O^(2-) = 1//"atom"`
Number of `TV = 2//"atom"`
Number of `TV = 1//"atom"`
Number of `A^(2+) = (1)/(8) xx 2 =(1)/(4)`
Number of `B^(3+) = (1)/(2) xx 1 =(1)/(2)`
Formula: `A_(1//4)^(2+)B_(1//4)^(3+)O^(2-)` or `AB_(2)O_(4)`.
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