Ionic and Covalent Bonds
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Questions and Answers

What type of bond involves the transfer of electrons between a metal and a non-metal?

  • Hydrogen bond
  • Ionic bond (correct)
  • Metallic bond
  • Covalent bond
  • In a covalent bond, how many atoms are involved?

  • Four
  • Three
  • Two (correct)
  • One
  • What does electronegativity measure in an atom?

  • Tendency to form bonds
  • Ability to attract photons
  • Ability to draw shared electrons towards itself in a bond (correct)
  • Rate of electron loss
  • What happens when atoms with different electronegativities are involved in a covalent bond?

    <p>They share electrons unequally, creating a dipole</p> Signup and view all the answers

    Why does the electron cloud move towards the more electronegative atom in a covalent bond?

    <p>Due to the higher electronegativity of one atom</p> Signup and view all the answers

    Which intermolecular force explains the temporary attraction between atoms due to the formation of spontaneous dipoles?

    <p>London dispersion forces</p> Signup and view all the answers

    What type of molecule is methane considered to be?

    <p>Non-polar</p> Signup and view all the answers

    In ammonia molecule, why does it exhibit a net dipole?

    <p>Presence of lone pairs on nitrogen</p> Signup and view all the answers

    What characteristic makes a molecule polar?

    <p>Presence of lone pairs affecting molecular shape</p> Signup and view all the answers

    Why is carbon tetrachloride considered non-polar?

    <p>Symmetry in the molecule</p> Signup and view all the answers

    Which step is crucial in determining the dipole moment of a molecule?

    <p>Checking if any polar bonds cancel out</p> Signup and view all the answers

    What property of the water molecule makes it polar?

    <p>Presence of lone pairs of electrons</p> Signup and view all the answers

    In a carbon tetrachloride molecule, why do the dipoles cancel out each other?

    <p>Tetrahedral and symmetrical shape</p> Signup and view all the answers

    Why does carbon dioxide have a zero dipole moment?

    <p>It has a linear and symmetrical shape</p> Signup and view all the answers

    What occurs when the polar bonds in a molecule cancel each other out?

    <p>The molecule becomes non-polar</p> Signup and view all the answers

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