The process that occurs when two nuclei come together to form one bigger nucleus is called:
a) fusion
Regarding the A-Z-X formatting for nuclear reactions, here's a breakdown of the symbols:
- A represents the mass number (the total number of protons and neutrons in the nucleus).
- Z represents the atomic number (the number of protons in the nucleus).
- X represents the chemical symbol of the element.
If you have specific nuclear reaction symbols you'd like to match or need further details, please provide them!