Question

An aluminium atom has a mass number of 27 and a proton number of 13. How many neutrons does this aluminium atom contain?

Answer 1

An aluminum atom with a mass number of 27 and a proton number of 13 contains 14 neutrons.

Step-by-step explanation:

An aluminum atom with a mass number of 27 and a proton number of 13 contains 14 neutrons. The mass number of an atom is the sum of its protons and neutrons. To calculate the number of neutrons, subtract the number of protons (13) from the mass number (27). Therefore, 27 - 13 = 14 neutrons.

Answer 2

Step-by-step explanation:

14 neutrons

Explanation: The mass number is the total number of protons and neutrons in a nucleus. The atomic number is the number of protons in the nucleus. →27−13=14 neutrons!