Chemistry 0620 · IGCSE · Isotopes

Isotopes — practice question

X and Y are both atoms. X and Y show identical chemical properties. Which row gives the atomic structures of X and Y?

  • AX: protons 6, neutrons 6, electrons 6; Y: protons 6, neutrons 6, electrons 7
  • BX: protons 6, neutrons 6, electrons 6; Y: protons 6, neutrons 8, electrons 6
  • CX: protons 6, neutrons 6, electrons 6; Y: protons 16, neutrons 16, electrons 16
  • DX: protons 7, neutrons 6, electrons 7; Y: protons 6, neutrons 6, electrons 7

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