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In corundum, oxide ions are arranged in ...

In corundum, oxide ions are arranged in hexagonal close packing and aluminium ionsa occpy tow-third of the octaheral voids. What is the formula of corrundum ? .

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To determine the formula of corundum, we need to analyze the arrangement of ions in the structure. Here’s a step-by-step solution: ### Step 1: Understand the arrangement of ions In corundum, oxide ions (O²⁻) are arranged in a hexagonal close packing (hcp) structure. ### Step 2: Determine the number of oxide ions Let’s assume the number of oxide ions in the packing is \( n \). ...
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