The oxidation numbers for each atom in AgCN are Ag: +1 C: +2 N: -3
The easiest way to see what oxidation numbers to assign to each atom in silver cyanide is to look at the compound from the perspective of ions.
Here, you're dealing with the cyanide anion, or
Now look at the cyanide ion. You know that the more electronegative atom must have the negative charge, and that the ion's overall charge is
If you give nitrogen a
Therefore, the oxidation numbers for each atom in