Chemistry, 30.11.2020 21:20 SakChan8367

The first four ionization energies for an imaginary element, Xz are E1 = 102 kcal, E2 = 186 kcal, E3 = 4,021 kcal, and E4 = 4,862 kcal. The number of valence electrons most probable as indicated by this ionization data is:

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