what is the formula for iron (ii) chloride?
Best Answer: The chemical formula for Iron (III) Chloride is FeCl3. Chlorine is a halogen and will very easily form the Chloride ion by picking up one electrons from something else. The Chloride ion has a -1 charge. In order to balance the +3 charge on the Iron ion (Fe+3), 3 Chloride ions (Cl-) are needed. Fe+3 + 3Cl- --> FeCl3. +3 + 3(-1) = 3 + -3 = 0 for an overall neutral compound.