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• The Lewis dot structure famously predicts the wrong electronic structure for O2 ... Mg Al Si P S Cl Ar Al Si P S Cl Ar 1s 2s 2p 3s 3p –19.4 eV –15.8 eV –32.4 eV
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Answer. Mg atom has 2 valence electrons. It loses these 2 valence electrons to form M g2+ ion. Cl atom has 7 valence electrons. It gains one valence electron to form C l− ion.
The electronic structure of helium is 1s2, which is equivalent to the structure of the other inert gases since there is no 1p sublevel. Inert gases have high ionization energies because each electron in the sublevel of highest energy is poorly screened from the nucleus by other electrons in its same sublevel. Each electron “sees” The electronic structure of helium is 1s2, which is equivalent to the structure of the other inert gases since there is no 1p sublevel. Inert gases have high ionization energies because each electron in the sublevel of highest energy is poorly screened from the nucleus by other electrons in its same sublevel. Each electron “sees”