1. Which of the following description is true for $^{24}_{12}$Mg2+
(A) 12 protons, 12 neutrons, and 12 electrons
(B) 12 protons, 12 neutrons, and 10 electrons
(C) 10 protons, 12 neutrons, and 12 electrons
(D) 12 protons, 10 neutrons, and 12 electrons

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