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In corundum, oxide ions are arranged in ...

In corundum, oxide ions are arranged in hcp array and the aluminum ions occupy two-thirds of octahedral voids. What is the formula of corundum ?

A

`Al_(2) O_(3)`

B

`Al_(2)O_(4)`

C

`Al_(2)O_(2)`

D

`AlO_(2)`

Text Solution

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The correct Answer is:
A
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