If element X is a noble gas what will be the symbol for the ions of element Z in its compounds?

If element X is a noble gas, it typically does not form ions because noble gases are generally unreactive and have a complete valence shell. However, if we consider element Z, which could be a metal or a non-metal that forms ionic compounds with X, its symbol for the ions in those compounds will depend on its oxidation state. For example, if Z is a metal like sodium (Na), the ion would be Na⁺. If Z is a non-metal like chlorine (Cl), the ion would be Cl⁻.