How to calculate the number of neutrons of an element

- How do you calculate the number of neutrons of an element
- How to calculate the neutrons of an element
- How do we calculate the number of neutrons an element has
- How to calculate the number of neutrons an element has
- How to calculate the number of protons electrons and neutrons of an element
- How to calculate the number of neutrons present in an element
- How to calculate the number of protons and neutrons in an element
- How do you calculate the number of neutrons an element has
- How can you calculate the number of neutrons in an element
- How do we calculate the number of neutrons in an element
- How do u calculate the number of neutrons in an element
- How would you calculate the number of neutrons in an element
- How do i calculate the number of neutrons in an element
- How do you calculate the number of neutrons in an element's atom
- Explain how to calculate the number of neutrons that the element thallium has