Question
Which of these ions have the same number of electrons as $S^{2-} ?$ Choose all that apply.a. $\mathrm{Cl}^{-} \quad$ b. $\mathrm{Ca}^{2+} \quad$ c. $\mathrm{Na}^{+} \quad$ d. $\mathrm{O}^{2-}$ $\quad$ e. $\mathrm{P}^{3-}$
Step 1
Sulfur (S) has 16 electrons in its neutral state. The $2-$ charge indicates that it has gained 2 additional electrons, so $S^{2-}$ has $16 + 2 = 18$ electrons. Show more…
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