Depends on if you have iron (II) iodide or iron (III) iodide.
iron (II) iodide is FeI2, while iron (III) iodide is FeI3.
Formula: [Ir3+][I-]3
Iron(III) iodide has the formula FeI3
I-
It is FeI3.
Aluminum (III) Iodide the aluminum uses it's +3 oxidation state therefore it is named Aluminum (III) and since it is ionic the Iodine just uses Iodide
Formula: Ir2(CO3)3
The ionic chemical formula of cobalt(III) chloride is: (Co)3+ + 3 Cl-.
Formula: [Au3+][Cl-]3
Iridium, Einsteinium
Formula: [Ir3+][I-]3
Aluminum (III) Iodide the aluminum uses it's +3 oxidation state therefore it is named Aluminum (III) and since it is ionic the Iodine just uses Iodide
Formula: Ir2(CO3)3
The chemical formula of aluminium iodide is AlI3.
Formula: [S(CH3)3]I
Direct combination of the elements:2 Al + 3 I2 ----> 2 AlI3
AI Aluminum iodide: The chemical formula is AlI3 In solution 4 ions: Al3+ an 3 I- (iodide)
The chemical formula for cobalt(III) iodide is CoI3. Visit shrinke.me/Z3JN8dPM for other chemical formulas.
Aluminium iodide is covalent because the electron pair is easily dragged away from the iodide ion. On the other hand, aluminium fluoride is ionic because the aluminium ion can't polarise the small fluoride ion sufficiently to form a covalent bond.
Fe (I2)3
The ionic chemical formula of cobalt(III) chloride is: (Co)3+ + 3 Cl-.
Iridium: Ir, atom number 77, mass 192.2 a.m.u.