Chemistry 9701 · AS & A Level · The Periodic Table: chemical periodicity

The Periodic Table: chemical periodicity — practice question

Which row is the correct one?

  • A$\text{AgI}$ dissolves in aqueous ammonia more readily than $\text{AgCl}$ does because $\text{AgI}$ reacts with aqueous ammonia.
  • B$\text{HCl}$ decomposes more readily than $\text{HI}$ does because Cl is more electronegative than I.
  • C$\text{I}_2$ has a higher melting point than $\text{Cl}_2$ because $\text{I}_2$ has stronger van der Waals’ forces than $\text{Cl}_2$.
  • D$\text{I}_2$ is a stronger oxidising agent than $\text{Cl}_2$ because an I atom loses electrons more readily than a Cl atom.

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