Chemistry 0620 · IGCSE · Ions and ionic bonds

Ions and ionic bonds — practice question

Elements X and Y combine to make a compound. Element X loses two electrons, while element Y gains one electron. What charges do the ions of elements X and Y have, and what is the formula of the compound?

  • Acharge on X: $2+$; charge on Y: $-$; formula: $X_2Y$
  • Bcharge on X: $2+$; charge on Y: $-$; formula: $XY_2$
  • Ccharge on X: $2-$; charge on Y: $+$; formula: $X_2Y$
  • Dcharge on X: $2-$; charge on Y: $+$; formula: $XY_2$

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