Group 7 elements.

OCR gateway B, C4 additional science. Group 7 elements: Descending in the group they are: Fluorine (Fl), chlorine (Cl), bromine (Br), iodine (I), astatine (At). 

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1. What is iodine at room temperature?

  • Orange liquid
  • Grey solid
  • Green gas
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2. The gain of an electron is called?

  • Reduction
  • Oxidation
  • Neither of thes

3. At room temperature what is chlorine?

  • Orange liquid.
  • Green gas.
  • Grey solid.

4. Why is there a change/ no change in reactivity?

  • Easier to lose the extra electron
  • Harder to attract the extra electron
  • Easier to attract the extra electron
  • Easier to attract the extra electron.

5. What happens when you go down the group?

  • Reactivity decreases
  • Reactivity increases
  • Reactivity stays the same
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