Select the option that correctly completes the sentence. A calcium ion is represented by the symbol: Ca2+. The "2+" superscript tells us that this ion formed when a neutral calcium atom:lost one electronlost two electronsgained one protongained two protons
Question
Select the option that correctly completes the sentence. A calcium ion is represented by the symbol: Ca2+. The "2+" superscript tells us that this ion formed when a neutral calcium atom:lost one electronlost two electronsgained one protongained two protons
Solution
The correct option is "lost two electrons". The "2+" superscript in the calcium ion symbol "Ca2+" indicates that the calcium atom has lost two electrons to achieve a stable electron configuration. This loss of electrons gives the calcium atom a positive charge, making it a cation.
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