Name the noble gas that has the same electron configuration as each of the ions in the following compounds:?

Aluminum sulfide Al2S3Magnesium nitride Mg3N2Rubidium oxide Rb2OCesium iodide CsI

Aluminum sulfide Al2S3Al+3 Neon, S-2 Argon Magnesium nitride Mg3N2Mg+2 Ne, N-3Ne Rubidium oxide Rb2O.Rb +2 Kr, O-2 Ne Cesium iodide CsI.Cs+1Xe, I-1 Xe

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