Question: is fe solid or aqueous?
Answer: All salts which contain a first-row transition metal (i.e., Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn) form octahedral complex ions when they are dissolved in water. In aqueous solution, transition metal cations are usually symbolized as Mn+(aq), where M is the atomic symbol of the metal ion and n is the charge on the ion.