The following ions have the same electron configuration except  \(_{8}\)O, \(_{12}\)Mg, \(_{13}\)AI, \(_{17}\)CI

Chemistry WAEC 2021

The following ions have the same electron configuration except 

\(_{8}\)O, \(_{12}\)Mg, \(_{13}\)AI, \(_{17}\)CI

  • CI\(^{-}\) checkmark
  • O\(^{2-}\)
  • Mg\(^{2+}\)
  • AI\(^{3+}\)

The correct answer is: A

Explanation

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