Final answer:
An atom of aluminum has 14 neutrons.
Step-by-step explanation:
An atom of aluminum (Al) has an atomic number of 13 and a mass number of 27. The atomic number represents the number of protons in an atom, and in this case, aluminum has 13 protons. The mass number represents the total number of protons and neutrons in the atom. To find the number of neutrons, subtract the atomic number from the mass number. Therefore, aluminum has 27 - 13 = 14 neutrons.
Learn more about Aluminum neutrons