Question
Determine the number of protons and the number of electrons in each ion.$$\text { a. }\mathrm{Al}^{3+} \quad \text { b. } \mathrm{Se}^{2-} \quad \text { c. } \mathrm{Ga}^{3+} \quad \text { d. } \mathrm{Sr}^{2+}$$
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For example, the atomic number of aluminum (Al) is 13, so all aluminum atoms have 13 protons. Show more…
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