Determine the correct formula for aluminum oxide. A) Al2O3 B) AlO C) AlO2 D) AlO3
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To balance these charges, we need 2 aluminum atoms for every 3 oxygen atoms. Show more…
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Sapphire is aluminium oxide. Aluminium oxide crystallizes with aluminium ions in two-third of the octahedral voids in the closest packed array of oxide ions. What is the formula of aluminium oxide? (a) $\mathrm{Al}_{2} \mathrm{O}_{3}$ (b) $\mathrm{AlO}_{2}$ (c) $\mathrm{Al}_{3} \mathrm{O}_{4}$ (d) $\mathrm{Al}_{3} \mathrm{O}_{2}$
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Exercises I
Which of the following oxides are basic? (a) $\mathrm{B}_{2} \mathrm{O}_{3}$ $\square$ (b) $\mathrm{Tl}_{2} \mathrm{O}$ (c) $\mathrm{In}_{2} \mathrm{O}_{3}$ $\square$ (d) $\mathrm{Al}_{2} \mathrm{O}_{3}$
The formula of corundum is: (a) $\mathrm{Al}_{2} \mathrm{O}_{3}$ ? (b) $\mathrm{Al}_{2} \mathrm{O}_{3} \cdot \mathrm{H}_{2} \mathrm{O}$ (c) $\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 2 \mathrm{H}_{2} \mathrm{O}$ $\square$ (d) $\mathrm{Al}_{2} \mathrm{O}_{3} \cdot 3 \mathrm{H}_{2} \mathrm{O}$
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