What the formula compound cation and anion for fe3NO2?

The compound Fe₃(NO₂)₂ consists of the cation iron (Fe³⁺) and the anion nitrite (NO₂⁻). In this formula, there are three iron cations, each with a +3 charge, balanced by two nitrite anions, each with a -1 charge. Therefore, the overall charge balances out to zero, resulting in the neutral compound.