The Halogens

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1. What is formed when a Group 7 element reacts with a metal?

  • Covalent halide with an X- ion.
  • Metallic halide with an X+ ion.
  • Ionic halide with an X- ion.
  • Ionic halide with an X+ ion.
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2. What are the strucural properties of a Group 7 element?

  • Simple molecular; Weak van der Waals' forces between diatomic molecules.
  • Metallic, Strong van der Waals' forces between diatomic molecules.
  • Giant covalent; Weak van der Waals' forces between diatomic molecules.
  • Giant ionic, Strong van der Waals' forces between diatomic molecules.

3. What colour and state is fluorine?

  • Red gas.
  • Brown liquid.
  • Pale yellow-green gas.
  • Pale yellow-green solid.

4. How many electrons are in the outer p sub-shell of a Group 7 element?

  • 5
  • 6
  • 7
  • 2

5. Which of these statments is true?

  • Halogens bond to form a covalent diatomic molecule, X2.
  • Halogens do not bond.
  • Halogens bond to form an ionic diatomic molecule, X2-.
  • Halogens bond to form an ionic diatomic molecule, X2+.

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