ions convert hydroxyapatite into harder fluoroapatite. The formula of fluoroapatite is:

Question

Canvas Classes · Accepted Answer

Strategy:
 Hydroxyapatite is a naturally occurring mineral form of calcium apatite. The replacement of the hydroxyl group with fluorine results in a more chemically stable and harder structure.

Step 1: Identify the starting formula
The formula for hydroxyapatite is .

Step 2: Perform the substitution
When  ions interact with hydroxyapatite, they replace the  ions:

The resulting formula for fluoroapatite is .

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