the exposure of water or moisture to the iron nail will convert the element to fe+3
No. It is not. Iron is an element. Oxygen is an element. Iron Oxide is a compound.
Rust is not an element but compounds of iron. The brown oxide of iron is ferrous oxide and the black oxide of iron is ferric oxide.
Rust is not an element. Rust is a compound which is made up of iron oxide.
NO!!!! It is a COMPOUND. It is made up of two elements. viz. Iron(Fe) and oxygen(O).
Oxygen
Actually there are several iron oxides, iron(II)oxide, iron(III)oxide and iron(II,III)oxide, and iron(III)oxide comes in four so-called 'phases'.All of these are compounds of iron with oxygen.
Iron oxide is a compound, but I would add that a chemist would refer to it as either ferrous oxide or ferric oxide, depending upon the proportion of iron to oxygen.
Rust is the compound iron oxide, or Fe2O3.
Carbon iron oxide - oxygen = carbon dioxide
iron oxide(rust) - Fe2O3
in its pure form, iron is an element, but that may not be what you are referring to.... if you have iron oxide (rust), this is a compound of iron and oxygen.
First, this would be an compound, not an element. Second, it does not exist. If it did exist it would be iron VI oxide, but iron cannot reach such a high oxidation state. However, there is Fe2O3, which is iron III oxide.