A chemical compound that starts with X would be Xenon Tetroxide (XeO4), Xenon diflouride (XeF2 ), Xenon Hexafluoride ( Idk If This Can Help A Little ) .
A cation is formed when a metal ion loses a valence electron while an anion is formed when a non-metal gains a valence electron. They both achieve a more stable electronic configuration through this exchange.
