Chemistry 0620 · IGCSE · Isotopes

Isotopes — practice question

In one atom of the isotope $^{27}_{13}\text{Al}$, how many protons, neutrons and electrons are present?

  • Aprotons 13, neutrons 13, electrons 13
  • Bprotons 13, neutrons 14, electrons 13
  • Cprotons 14, neutrons 13, electrons 13
  • Dprotons 14, neutrons 14, electrons 13

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