Aluminum oxide (Al2O3) is a widely used industrial abrasive (emery, corundum), for which
Chapter 9, Problem 9.32(choose chapter or problem)
Aluminum oxide (Al2O3) is a widely used industrial abrasive (emery, corundum), for which the specific application depends on the hardness of the crystal. What does this hardness imply about the magnitude of the lattice energy? Would you have predicted from the chemical formula that Al2O3 is hard? Explain.
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