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Which electronic configuration of an element has abnormally high difference between second and third ionization enthalpies?
(1) \( 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{1} \)
(2) \( 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{1} \)
(3) \( 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{2} \)
(4) \( 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} \)
(B)
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