Answer:
1. 61 neutrons  - Promethium - Pm
2. 126 neutrons  - Unbihexium - Ubh
3. 2 neutrons  - Helium - He
4. 32 neutrons  - Germanium - Ge
5. 110 neutrons  - Tungsten - W
6. 45 neutrons  - Bromine - Br
7. 121 neutrons  - Mercury - Hg
8. 146 neutrons - Uranium - U
Explanation:
I Don't know how to explain, but I hope that this helped You.
