Which period 3 element has successive first through seventh ionization energies \( (\mathrm{kJ} / \mathrm{mol}): E_{11}=578, E_{12}=1,817 ; E_{13}=2,745 ; E_{14}=11,575 ; E_{5}=14,830 ; E_{15}=18,376 ; \) and \( E_{17}=23,293 \) ?
Cl
Al
Mg
S
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