Fluorine has an atomic number of 9 and an atomic mass of 19. How many protons, neutrons, and electrons does a neutral atom of fluorine have?(1 point)

Responses

9 electrons, 9 protons, 10 neutrons
9 electrons, 9 protons, 10 neutrons

9 electrons, 10 protons, 10 neutrons
9 electrons, 10 protons, 10 neutrons

10 electrons, 9 protons, 10 neutrons
10 electrons, 9 protons, 10 neutrons

9 electrons, 9 protons, 9 neutrons

1 answer

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