Question

NUMERO DE OXIDACION AI2(CO3)3

Answer 1

₊₃    ₊ₓ  ₋₂
Al2 (C O3)3
```````````````````
+6+3x -18 = 0

      3x = 18 - 6

      3x = 12

       x = 12/3 = 4

Al: +3
 C: +4
 O: -2