Chemistry 9701 · AS & A Level · Group 17

Group 17 — practice question

Which statement accounts for iodine being less volatile than chlorine?

  • AChlorine is more electronegative than iodine and so has more repulsion between its molecules.
  • BThe greater number of electrons in iodine leads to larger temporary dipole-induced dipole forces.
  • CThe I-I bond energy is smaller than the Cl-Cl bond energy.
  • DThe iodine molecules have stronger permanent dipole-permanent dipole forces.

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