First, dissociate the salt into ions:
Fe(NO3)2(aq) → Fe2+(aq) + 2 NO3–(aq)
Check the cation for hydrolysis:
Fe2+(aq) + 2 H2O(l) → ← FeOH+(aq) + H3O+(aq)
Yes, the reaction occurs because FeOH+ is a weak base.
So hydronium ion is generated.
Check the anion for hydrolysis:
NO3–(aq) + H2O(l) → NR
This reaction does not occur because nitric acid is a strong acid.