Answer
Al is oxidized
Fe is reduced
Work Step by Step
3Fe(NO3)2 + 2Al --> 3Fe + 2Al(NO3)3
Al and Fe are in their elemental states so they are both oxidation state of 0.
NO3-, the nitrate ion has a charge of -1 so on the left since there are 2 (NO3)- groups, which equals -2 then Fe must be Fe2+
Therefore, Fe goes from 2+ on the left to 0 on the right
Fe gains electrons and is reduced
Al(NO3)3. Here we have 3 (NO3)- groups, which is 3- so that means Al is Al3+
Therefore, Al goes from 0 to 3+
Al loses electrons and is oxidized
