Chemistry 0620 · IGCSE · Ions and ionic bonds

Ions and ionic bonds — practice question

Which row shows the charge on the chromium ion and on the sulfate ion in $\text{Cr}_2(\text{SO}_4)_3$?

  • ACr $2+$ ; $\text{SO}_4$ $3-$
  • BCr $2-$ ; $\text{SO}_4$ $3+$
  • CCr $3+$ ; $\text{SO}_4$ $2-$
  • DCr $3-$ ; $\text{SO}_4$ $2+$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI