Covalent Bonding and Non-Metals Quiz
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Questions and Answers

What type of elements form covalent bonds?

  • Metals and metalloids
  • Two non-metals (correct)
  • Noble gases and non-metals
  • Metals and non-metals

    • What is the role of electrons in a covalent bond?

  • Electrons are shared between atoms (correct)
  • Electrons are donated by one atom to another
  • Electrons are transferred between atoms
  • Electrons are repelled by the nuclei of the atoms

    • What is the significance of sharing electrons in a covalent bond?

  • It allows the atom to achieve a stable electron configuration (correct)
  • It increases the atomic mass of the atom
  • It changes the atomic number of the atom
  • It makes the atom positively charged

    • What is bond energy?

    <p>The energy required to break one mole of a covalent bond in the gaseous state</p> Signup and view all the answers

    What is the bond length?

    <p>The distance between the nucleus of one atom to another atom which forms the covalent bond</p> Signup and view all the answers

    What happens to the bond length when the forces of attraction between electrons and nuclei increase?

    <p>Decreases</p> Signup and view all the answers

    Why are triple bonds the shortest and strongest covalent bonds?

    <p>Due to the large electron density between the nuclei of the two atoms</p> Signup and view all the answers

    What do dot and cross diagrams represent?

    <p>Covalent bonding</p> Signup and view all the answers

    What does 'expanding the octet rule' refer to?

    <p>Accommodating more than 8 electrons in the outer shell of a central atom</p> Signup and view all the answers

    What is a lone pair of electrons?

    <p>A pair of electrons not involved in bonding</p> Signup and view all the answers

    What is an electron-deficient atom?

    <p>An atom that has an unfilled outer orbital</p> Signup and view all the answers

    What is dative covalent bonding also known as?

    <p>Coordinate bonding</p> Signup and view all the answers

    In what form does aluminium chloride exist at high temperatures?

    <p>(AlCl3)</p> Signup and view all the answers

    'Aluminium chloride at lower temperatures forms what type of structure?'

    <p>(Al2Cl6)</p> Signup and view all the answers

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