Question

6. How is the number of neutrons in the nucleus of an atom calculated? (1 point)

Answer 1

On the periodic table there are two numbers by the element, right? Since elements have their identity by the number of protons they have, the smaller number must be the number of protons. The larger number represents the sum of all the protons and neutrons, so all you have to do is subtract the smaller number from the bigger number and the number of particles represents the neutrons.

Answer 2

To calculate the number of neutrons in an atom, subtract the atomic number from the atomic weight. That will give you the number of neutrons. The atomic number is the number of protons. The atomic weight consists of the number of protons plus the number of neutrons. (The electrons add very little to the atomic weight.)