Here is the matching of the nuclear reactions to their descriptions:
Column A
- Forms two lighter nuclei: b. Fission
- Forms one heavier nucleus: a. Fusion
- cb794d20-2b7f-4bf4-a043-964706757c9a: (No description provided)
- 808ecb1f-d7df-46f5-9d92-076db0dd74a0: (No description provided)
- Has been successfully used to generate energy: a. Fusion
- Has NOT been successfully used to generate energy/electricity: b. Fission
Please replace the entries '3' and '4' with the appropriate descriptions to complete the matching.