Question

How many neutrons are in the following atoms?

Answer 1

This looks like nucleotide notation. It has the following form:\[_{Z}^{A}N\]where A is the atomic mass, N is the element, and Z is the atomic number.

Do you know how to find the number of neutrons when given the atomic mass and atomic number?

Answer 2

protons and neutrons are both nucleons

number of protons = Z
number of nucleons = A

number of neutrons = nucleons - protons