Chemistry: Covalent Bonds and Elements
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Chemistry: Covalent Bonds and Elements

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Questions and Answers

What is the maximum number of electrons the first shell of an atom can accommodate?

  • 4 electrons (correct)
  • 6 electrons
  • 10 electrons
  • 8 electrons
  • Which group of elements do not form chemical bonds due to having full outer energy levels?

  • Halogens
  • Alkali metals (correct)
  • Noble gases
  • Transition metals
  • What is the term used for the outermost energy level of an atom?

  • Valence shell
  • Proton layer
  • Neutron shell (correct)
  • Core nucleus
  • Which type of elements possess characteristics of both metals and non-metals?

    <p>Transition metals</p> Signup and view all the answers

    How do elements achieve the octet rule according to the text?

    <p>By increasing their proton count</p> Signup and view all the answers

    Why are covalent molecules poor conductors of electricity?

    <p>They are not made up of ions</p> Signup and view all the answers

    What property of covalent molecules contributes to their low boiling and melting points?

    <p>Large intermolecular spaces</p> Signup and view all the answers

    What makes covalent bonds different from ionic bonds?

    <p>Covalent bonds involve sharing electrons, while ionic bonds involve transferring electrons.</p> Signup and view all the answers

    Why do covalent bond molecules usually exist in a gaseous, soft solid, or volatile liquid state?

    <p>They have high energy bonds</p> Signup and view all the answers

    Why do atoms share electrons in covalent bonds?

    <p>To achieve the octet rule and gain stability</p> Signup and view all the answers

    What makes covalent molecules easily dissolve in organic solvents?

    <p>Weak intermolecular forces</p> Signup and view all the answers

    Which type of bond is formed when atoms share three pairs of electrons?

    <p>Triple covalent bond</p> Signup and view all the answers

    Which factor contributes to the low density of covalent bond molecules?

    <p>Large intermolecular spaces</p> Signup and view all the answers

    What defines a pure covalent bond?

    <p>Two similar elements share electrons equally</p> Signup and view all the answers

    What distinguishes a polar covalent bond from a non-polar covalent bond?

    <p>A non-polar covalent bond involves unequal sharing of electrons.</p> Signup and view all the answers

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