Question

How do i know how many neutrons of an element

Answer 1

Answer:

neutrons = atomic mass - atomic number.

hope that helps

Answer 2

Answer:

Since the vast majority of an atom's mass is found its protons and neutrons, subtracting the number of protons (i.e. the atomic number) from the atomic mass will give you the calculated number of neutrons in the atom. In our example, this is: 14 (atomic mass) – 6 (number of protons) = 8 (number of neutrons).