Answer: Add to your atomic mass
Explanation: Atomic mass is made up of the protons and neutrons, so your atomic mass right now is 7. Adding a neutron will make the atomic mass 8.
Answer:
Convert into an atom of lithium-8.
Explanation:
Your nucleus has three protons and four neutrons, so you have an atom of lithium-7.
If you add a neutron, you are creating an isotope of lithium with one more unit of mass.
That is, you are forming an atom of lithium-8.
