Question

I)-1, U, +1
2) I, +1, U
9) +1, U, -I
I- I,
The charge on a cation 'M' is +2 and anion 'A' is -3. The compound formed has the formula
1) MA2
2) M3A2
4) M2A3
3) M2A​

Answer 1

4 option m2A3

and option are incorrect the option should be M2A-3