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)

9 electrons, 9 protons, 10 neutrons

9 electrons, 9 protons, 9 neutrons

9 electrons, 10 protons, 10 neutrons

10 electrons, 9 protons, 10 neutrons

1 answer

A neutral atom of fluorine has the same number of protons and electrons. Since fluorine has an atomic number of 9, it has 9 protons and 9 electrons.

To find the number of neutrons, you subtract the atomic number from the atomic mass. The atomic mass of fluorine is approximately 19, so:

Number of neutrons = Atomic mass - Atomic number = 19 - 9 = 10

Therefore, a neutral atom of fluorine has:

  • 9 electrons
  • 9 protons
  • 10 neutrons

The correct answer is: 9 electrons, 9 protons, 10 neutrons.