How to find the amount of neutrons an element has

- How do you find the amount of neutrons an element has
- How to find the number of neutrons an element has
- Describe how to find the number of neutrons an element has
- How to find the number of neutrons in an element
- How to calculate the number of neutrons in an atom
- How to calculate number of neutrons in an isotope
- How to find number of protons neutrons and electrons
- How to find proton neutron and electron of an element