ChemistryEasy127×since 2002Q1609Identify the elements X and Y using the ionisation energy values given below : Ionization energy (kJ/mol) 1st{st}st 2nd{nd}nd X 495 4563 Y 731 1450AX = F; Y = MgBX = Mg; Y = FCX = Na; Y = MgDX = Mg; Y = NaCheck answerSkip