Chemistry 0620 · IGCSE · Ions and ionic bonds

Ions and ionic bonds — practice question

An element from Group I reacts with an element from Group VII and produces an ionic bond. Which row shows how the electronic structures are changed?

  • AGroup I: before 2,8,1 → after 2,8,2; Group VII: before 2,7 → after 2,6
  • BGroup I: before 2,8 → after 2,7; Group VII: before 2,8 → after 2,8,1
  • CGroup I: before 2,8,1 → after 2,8; Group VII: before 2,7 → after 2,8
  • DGroup I: before 2,8 → after 2,8,1; Group VII: before 2,8 → after 2,7

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