Help with writing formulas?

KungFu Ninja

New member
Please help with these chemistry questions. I am so lost.

How do you write the formulas for the compounds that would from from the combination of these ions:

Q+2 and Z-3

A+3 and B-1

X+2 and Y-2

and these polyatomic ions:

AB+3 and YZ-2

CD+1 and WX-3

EF+2 and UV_1

Thanks for the help. If i know how you solve these i can figure out how to do the rest. TY.
 
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