A neutral atom of fluorine, with an atomic number of 9, has:
- 9 protons (the atomic number indicates the number of protons)
- 9 electrons (in a neutral atom, the number of electrons equals the number of protons)
- 10 neutrons (the atomic mass is approximately 19, so the number of neutrons can be calculated as atomic mass - atomic number: 19 - 9 = 10)
Thus, the correct response is:
9 electrons, 9 protons, 10 neutrons