The bond formed between iron (electronegativity = 1.9) and chlorine (electronegativity = 3.2) is

Here the chemical bond formed between iron and chlorine is an ionic bond, we can check this either through two ways, looking and identifying that Fe is a metal and Cl is a nonmetal, and thus would only allow for ionic bonds to be formed, I or by taking the difference in electronegativity and seeing if it is greater than or equal to 1.3. To be ionic.