QuestionQuestionConceptConceptDocumentDocument

11. Group 17

Start with Concept to understand a topic, then use Question Bank to check what you know.

4 topics · 10 learning objectives

Your progress

Sign in to see your mastery and mistakes.

  1. 11.1 Physical properties of the Group 17 elements

    1. • Describe the colours and the trend in volatility of chlorine, bromine and iodine

    2. • Describe/explain: the trend in the bond strength of the halogen molecules

    3. • Interpret the volatility of the elements in terms of instantaneous dipole–induced dipole forces

  2. 11.2 The chemical properties of the halogen elements and the hydrogen halides

    1. • Describe the relative reactivity of the elements as oxidising agents

    2. �� Describe reactions of the elements with hydrogen and explain their relative reactivity in these reactions

    3. • Describe the relative thermal stabilities of the hydrogen halides and explain these in terms of bond strengths

  3. 11.3 Some reactions of the halide ions

    1. • Describe the relative reactivity of halide ions as reducing agents

    2. • Describe/explain: the reactions of halide ions with:: (a) aq. silver ions followed by aq. ammonia (the formation and formula of the [Ag(NH3)2]+ complex is not required); (b) conc. sulfuric acid, to include balanced chemical equations

  4. 11.4 The reactions of chlorine

    1. 11.4.1And interpret

      • Describe and interpret, in terms of changes in oxidation number, the reaction of chlorine with cold and with hot aq. sodium hydroxide and recognise these as disproportionation reactions

    2. 11.4.2Explain

      • Explain, including by use of an equation, the use of chlorine in water purification to include the production of the active species HOCl and Cl O – which kill bacteria