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Question

In a normal spinal structure, there is a closed packed array of O2 ions. The trivalent cations are present in:

A
75% of octahedral voids
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B
50% of octahedral voids
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C
12.5% of tetrahedral voids
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D
25% of octahedral voids
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Solution

The correct option is B 50% of octahedral voids
In normal spinal structure,
structure, A2+ occupy 18th of the tetrahedral voids and B3+ occupy 12 i.e, 50% of the octahedral voids .
Hence, 50% is the answer
The correct option is B.

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