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If the unit cell of a mineral has cubic ...

If the unit cell of a mineral has cubic close packed (ccp) array of oxygen atoms with m fraction of octahedral holes occupied by aluminium ions and n fraction of tetrahedral holes occupied by magnesiums ions, m and n respectively, are

A

`(1)/(2), (1)/(8)`

B

`1, (1)/(4)`

C

`(1)/(2), (1)/(4)`

D

`(1)/(4), (1)/(8)`

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The correct Answer is:
A
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