`3Ca_(3)(PO_(4))_(2).CaF_(2)` is a part of enamel on teeth. True or False

Answer

To determine whether the statement "3Ca3(PO4)2.CaF2 is a part of enamel on teeth" is true or false, we can follow these steps:

### Step 1: Understand the Composition of Teeth Enamel
Teeth enamel is primarily composed of minerals, and the main mineral found in enamel is a form of calcium phosphate.

### Step 2: Identify the Main Component of Enamel
The main mineral in teeth enamel is known as fluorapatite, which has the formula Ca5(PO4)3F. This indicates that fluorine (F) is incorporated into the structure of the apatite.

### Step 3: Analyze the Given Formula
The given formula is 3Ca3(PO4)2.CaF2. We can break this down:
- 3Ca3(PO4)2 represents calcium phosphate.
- CaF2 represents calcium fluoride.

### Step 4: Compare with Known Enamel Composition
We need to check if the given formula can be related to fluorapatite:
- The formula for fluorapatite is Ca5(PO4)3F, which includes both calcium phosphate and fluoride.
- The given formula can be rearranged to show that it contains components that are similar to those found in fluorapatite.

### Step 5: Conclusion
Since the given formula contains both calcium phosphate and calcium fluoride, it can be concluded that it is indeed a part of the enamel on teeth.

Thus, the statement "3Ca3(PO4)2.CaF2 is a part of enamel on teeth" is **True**.

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