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OpenStudy (anonymous):
Which of the following ions have the same ground state electron configuration: Sr2+, Ca2+, Mg2+, and S2-? Ca2+ and S2- Mg2+ and S2- Ca2+ and Mg2+ Sr2+ and Ca2+ None of the Above
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OpenStudy (wolfe8):
Welcome to OpenStudy. Can you get the electron configuration or at least the number of electrons of those? Use: http://www.ptable.com/
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