Iron is a chemical element, not a compound.
Iron is not a compound, it is a metallic element.
Fe3N2 is ferric nitride, and it is ionic, not covalent.
Ionic
Iron sulphide is an ionic compound. The Iron is in a +2 oxidation state and the sulphur is in a -2 oxidation state.
No, FeO2 is not an ionic compound. It is more likely a covalent compound based on the elements it consists of (iron and oxygen). Iron can form both ionic and covalent compounds, but in the case of FeO2, it is more likely covalent due to the high oxidation state of oxygen.
It is an ionic compound.
Iron(III) chloride is an ionic compound.
The iron (II) sulphide is a chemical compound; no metal or metalloid.
Yes it is an ionic compound because it is form between Fe (iron) and CO3 (carbonate).
This is a covalent compound. S-Cl bond is covalent.
a covalent compound has protons and electrons
Only in the acid (-COOH) and hydroxy (=C-O-H) group the bonds are polar, all others are covalent.