Rust is a compound with the formula f e 2 o 3 . which elements combine to form rust?

Fe represents Iron, and O represents oxygen, so 2 molecules of iron and 3 molecules of oxygen combine to form rust... Hope this helps

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

the increase of protons   hope this