All elements which have distinct multiatomic molecules are covalent. (Noble gases have only one atom per molecule, so no bonds; metals are ... metallic.) If they were ionic, how would the iodine atoms "know" which ones were supposed to be positive and which ones were supposed to be negative?
both, when reacting with group 1 and 2 elements its ionic, group 6,7 its covalent
The hypothetical iodite ion would be IO2- which would contain two covalent bonds
Iodine tetrachloride (ICl4) is a covalent compound
iodine is covalently bonded.
Iron(III) nitrate is ionic.
Ionic
Ionic
Electronegativity Fe = 1.83; O = 3.44 3.44 - 1.83 = 1.61 Since the electronegativity difference is 1.61 the bond is polar covalent 0 - 0.4 = Pure Covalent Bond 0.41 - 1.7 = Polar Covalent Bond 1.7 + = Ionic Bond
ionic
Ionic
covalent
Ionic
Ionic
Electronegativity Fe = 1.83; O = 3.44 3.44 - 1.83 = 1.61 Since the electronegativity difference is 1.61 the bond is polar covalent 0 - 0.4 = Pure Covalent Bond 0.41 - 1.7 = Polar Covalent Bond 1.7 + = Ionic Bond
The bond is ionic.
ionic
Ionic
covalent
It is an ionic compound.
Metallic bonding is exhibited in an iron nail.
Ionic. Iron can be present as Fe2+ or Fe3+. Oxygen is present as the oxide ion O2-
Elemntal iron is a metal with metallic bonding. In its compounds the bonding can be ionic or covalent.
Ionic because it is made of a metal and a non-metal bonded.