OCR A Combined Science Chemistry C2: Bonding
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Questions and Answers

What is the primary force holding atoms together in a covalent bond?

  • Electrostatic attraction (correct)
  • Nuclear fusion
  • Van der Waals forces
  • Gravitational force
  • What is the shape of a molecule with a trigonal planar arrangement of electron pairs?

  • Linear
  • Trigonal planar (correct)
  • Tetrahedral
  • Trigonal bipyramidal
  • Which of the following types of bonds is typically found in metals?

  • Metallic bonds (correct)
  • Ionic bonds
  • Electrovalent bonds
  • Covalent bonds
  • What is the correct order of increasing bond strength?

    <p>Hydrogen bond, covalent bond, ionic bond</p> Signup and view all the answers

    What type of bond is formed when a highly electronegative atom, such as oxygen, bonds with a less electronegative atom, such as hydrogen?

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

    Study Notes

    Covalent Bonds

    • The primary force holding atoms together in a covalent bond is the sharing of one or more pairs of electrons.

    Molecular Shapes

    • A molecule with a trigonal planar arrangement of electron pairs has a shape resembling a triangle, with all atoms in a single plane.

    Metallic Bonds

    • Metallic bonds are typically found in metals, where electrons are delocalized and free to move throughout the metal lattice.

    Bond Strength

    • The correct order of increasing bond strength is: ionic < polar covalent < nonpolar covalent.

    Electronegative Bonds

    • When a highly electronegative atom, such as oxygen, bonds with a less electronegative atom, such as hydrogen, a polar covalent bond is formed.

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    Description

    Test your knowledge of chemical bonding, including covalent bonds, electron pair arrangements, and bond strengths. This quiz covers the key concepts of OCR A Combined Science Chemistry C2.

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