This sounds very much like a chicken-egg problem.
The first thing that formed must be hydrogen nuclei. The only other alternative is that the atom was created instantly, and the nuclei sprang forth at the same time as the atom, meaning that neither was technically first. The logic is that an atom can’t form without a nucleus, but it theoretically could be created instantly.
If it loses an electron, it will become an ion.
Answer: daughter nucleus is Oxygen-17
Explanation: electron and proton form a neutron in nucleus.
Mass number remains same and number of proton decreases.
