• 1. 
    The F-S-F bond angles in SF6 are ______.

  • 109o28'
  • 120o only
  • 90o and 120o
  • 45o and 90o
  • 2. 
    Which one of the following is the correct bond angle between atoms adopting a trigonal planar geometry?

  • 180°
  • 109.5°
  • 90°
  • 120°
  • 3. 
    A (pi) bond is the result of the

  • overlap of two s orbitals
  • overlap of two p orbitals along their axes.
  • sidewise overlap of two parallel p orbitals.
  • sidewise overlap of two s orbitals.
  • 4. 
    For which of the following molecules would the VSEPR model predict a trigonal pyramidal structure?

  • BeF2
  • BF3
  • PF3
  • CF4
  • 5. 
    When applying VSEPR theory to predict molecular shape, which of the following do we not need to take into account?

  • Valence electrons occupying sigma bonding orbitals
  • Valence electrons occupying pi bonding orbitals
  • Valence electrons occupying non-bonding orbitals
  • 6. 
    Choose the molecule that is incorrectly matched with the electronic geometry about the central atom.

  • CF4 - tetrahedral
  • BeBr2 - linear
  • H2O - tetrahedral
  • PF3 - pyramidal
  • 7. 
    From the following possible responses, select those responses that give the combination of bonds that makes up a triple covalent bond.

  • Two sigma bonds
  • Two pi bonds
  • One sigma bond and two pi bonds
  • Two sigma bonds and one pi bond
  • 8. 
    Ammonia, NH3, adopts a tetrahedral geometry. However, the non-bonding pair on the central nitrogen atom distorts the bond angle away from the expected 109.5°. Which of the following statements correctly describes how the bond angle is distorted?

  • The actual bond angle is reduced: it is less than 109.5°
  • The actual bond angle is increased: it is more than 109.5°
  • 9. 
    Apply the VSEPR model to XeF4. Which of the following molecular shapes is consistent with the model?

  • Disphenoidal
  • Square planar
  • Tetrahedral
  • Square pyramidal
  • 10. 
    The atoms in a molecule of water adopt what kind of geometry?

  • Linear
  • Tetrahedral
  • Bent
  • Trigonal planar
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