c. 13+1-2=12
7-1=6
so oxygen: (top number 12) (bottom number 6) O
d. 82+0=82
36+1=37
so Rubidium: (top number 82) (bottom number 37) Rb
6. 59+1-56=4
27-25=2
so Helium: (top number 4) (bottom number 2) He
7. 14-14=0
6-7=-1
so electron: (top number 0) (bottom number -1) e
8. 99-0=99
42--1=43
so Technicium: (top number 99) (bottom number 43) Tc
I've laid all the questions out so it's question number, atomic mass, proton number, determination of the element, and then put it all put together
If you have any other questions let me know,
Hope this helps :)
