However, there are actually multiple compounds that can form from iron and oxygen, each with its own specific chemical formula and properties. Here are a couple of examples:
* Iron(II) oxide (FeO) is a black solid.
* Iron(III) oxide (Fe₂O₃) is the most common form of rust and is a reddish-brown solid.
So, while "rust" is the most common name for a compound of iron and oxygen, it's important to remember that it specifically refers to iron(III) oxide (Fe₂O₃).
