Chemistry 0620 · IGCSE · Isotopes

Isotopes — practice question

Which row gives the counts of protons, neutrons and electrons in the ion $^{{18}}_{{8}}\text{O}^{2-}$?

  • Aprotons 10, neutrons 8, electrons 8
  • Bprotons 8, neutrons 10, electrons 8
  • Cprotons 10, neutrons 8, electrons 10
  • Dprotons 8, neutrons 10, electrons 10

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