Chemistry 9701 · AS & A Level · Atomic structure

Atomic structure — practice question

Which species has a different electron count from the other three?

  • A$\text{ClO}_4^-$
  • B$\text{H}_2\text{SO}_4$
  • C$\text{SO}_4^{2-}$
  • D$\text{Te}^{2-}$

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