Question

how many isotopes of fluorine are there in tap water?​

Answer 1

Answer:

There is only one stable, naturally occurring isotope of fluorine: 19 F. However, the radioactive isotopes 17 F, 18 F, and 20 F are known.

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Answer 2

Answer:

There is only one stable, naturally occurring isotope of fluorine: 19 F. However, the radioactive isotopes 17 F, 18 F, and 20 F are known.