The Carbon and its Compounds Quiz
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Questions and Answers

What prevents carbon from forming a cation with a charge of +4?

  • Having a high number of protons in its nucleus
  • Attracting electrons strongly from other elements
  • Sharing its valence electrons with other atoms (correct)
  • Losing its valence electrons easily

    • What is the major reason for covalently bonded molecules having low melting and boiling points?

  • Strong bonds within the molecule and strong intermolecular forces
  • Weak bonds within the molecule and weak intermolecular forces
  • Strong bonds within the molecule and weak intermolecular forces (correct)
  • Weak bonds within the molecule and strong intermolecular forces

    • What allows both atoms in a covalent bond to attain noble gas configuration?

  • Sharing of valence electrons (correct)
  • Loss of valence electrons
  • Gain of valence electrons
  • Transfer of valence electrons

    • What is the primary reason for methane being widely used as a fuel?

    <p>It is a major component of bio-gas and Compressed Natural Gas (CNG) (B)</p> Signup and view all the answers

    Why do many elements form molecules by sharing electrons?

    <p>To attain noble gas configuration (A)</p> Signup and view all the answers

    What is the primary reason for carbon sharing its valence electrons with other atoms?

    <p>To overcome the large energy requirement for removing four electrons (B)</p> Signup and view all the answers

    What is the primary purpose of sharing electrons in covalently bonded molecules?

    <p>To help both atoms attain the noble gas configuration (D)</p> Signup and view all the answers

    Why do covalently bonded molecules have low melting and boiling points?

    <p>Strong intramolecular bonds but weak intermolecular forces (A)</p> Signup and view all the answers

    What is a major characteristic of methane that makes it widely used as a fuel?

    <p>It is a major component of bio-gas and Compressed Natural Gas (CNG) (D)</p> Signup and view all the answers

    What allows many elements to form molecules by sharing electrons?

    <p>The shared electrons 'belong' to the outer shells of both atoms (A)</p> Signup and view all the answers

    What is the primary reason for covalently bonded molecules having low melting and boiling points?

    <p>Strong bonds within the molecule but weak intermolecular forces (B)</p> Signup and view all the answers

    What is the major reason for methane being widely used as a fuel?

    <p>It has high energy content per unit mass (C)</p> Signup and view all the answers

    What prevents carbon from forming a cation with a charge of +4?

    <p>Large amount of energy required to remove four electrons (A)</p> Signup and view all the answers

    What allows both atoms in a covalent bond to attain noble gas configuration?

    <p>Sharing of valence electrons between atoms (A)</p> Signup and view all the answers

    Why do many elements form molecules by sharing electrons?

    <p>To attain a more stable electron configuration (A)</p> Signup and view all the answers

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