Quiz  /  Vsepr Theory Class 9 MCQ Questions With Answers

  • 1. 
    The acronym VSEPR stand for

  • very strong electron pair repulsion.
  • varied symmetry electrostatic proton reaction.
  • venomous snakes enjoy pink ribbons.
  • valence shell electron pair repulsion.

  • 2. 
    Molecules such as boron trichloride that have three bonded atoms and no unshared pairs have what shape?

  • trigonal planar
  • trigonal pyramidal
  • trigonal bipyramidal
  • tetrahedral

  • 3. 
    Determine the molecular shape of carbon tetrafluoride.

  • linear
  • trigonal planar
  • bent
  • tetrahedral

  • 4. 
    What molecular shape is this?

  • Trigonal Planar
  • Trigonal Bipyramidal
  • Tetrahedral
  • Pyramidal

  • 5. 
    How many unshared pairs of electrons will a pyramidal molecule have?

  • 1
  • 2
  • 3
  • 4

  • 6. 
    How many lone pairs are in this molecule's structure?

  • 6
  • 2
  • 0
  • 4

  • 7. 
    What is the bond angle for this molecule?

  • 109.5
  • 120
  • 107
  • 90

  • 8. 
    What is the molecular shape of a silicon dioxide molecule?

  • linear
  • trigonal planar
  • bent
  • tetrahedral

  • 9. 
    Will this molecule be polar or nonpolar? PH3

  • polar
  • nonpolar

  • 10. 
    Which of the following shapes has unshared pairs of electrons on the central atom?

  • Bipyramidal
  • Bent
  • Trigonal Planar
  • Tetrahedral

  • 11. 
    What shape would PH3 have?

  • Trigonal Planar
  • Trigonal pyramidal
  • Bent
  • Linear

  • 12. 
    Who could this be?

  • CO2
  • NH3
  • H2S
  • CH4

  • 13. 
    The Bohr model of the atom proposed that electrons move at fixed distances from the nucleus and that the energy of the electron is related to its orbit. What discovery contributed to the development of this atomic model?

  • Electrons can flow freely through metals making metals good conductors.
  • Elements have characteristic wavelengths of light emission and absorption
  • Noble gas elements are much less reactive than most other elements.
  • Electrons exhibit properties of both particles and waves.

  • 14. 
    How many different bond angles will a Trigonal Bipyramidal molecule have?

  • 1
  • 2
  • 3
  • 4

  • 15. 
    What shape would this have?

  • Trigonal planar
  • Pyramidal
  • Tetrahedral
  • Bent

  • 16. 
    Which of the following correctly matches a compound with its molecular geometry?

  • Water (H2O) : linear
  • Carbon dioxide (CO2): tetrahedral
  • Ammonia (NH3): trigonal planar
  • Methane (CH4): tetrahedral

  • 17. 
    Any molecule with only two atoms must be linear. Three-atom molecules such as BeCl2 can also be linear. For linear molecules, the bond angle is

  • 360°360\degree360°
  • 180°180\degree180°
  • 120°120\degree120°
  • 90°90\degree90°

  • 18. 
    What is the bond angle in a bent molecule?

  • 90
  • 105
  • 107
  • 180

  • 19. 
    What molecular shape is the structure shown here? (BCl3)

  • linear
  • trigonal planar
  • tetrahedral
  • trigonal pyramidal

  • 20. 
    What is the molecular geometry of carbon tetrachloride CCl4 ?

  • Linear
  • Trigonal planar
  • tetrahedral
  • trigonal pyramidal

  • 21. 
    What molecular shape is the structure shown here? (H2O)

  • tetrahedral
  • trigonal planar
  • bent
  • trigonal pyramidal

  • 22. 
    The bond angle for a trigonal planar molecule is

  • 90 Degrees
  • 109.5 Degrees
  • 120 Degrees
  • 180 Degrees

  • 23. 
    What is the bond angle for a pyramidal molecule?

  • 90
  • 107
  • 109.5
  • 120

  • 24. 
    VSEPR theory is to

  • determine the number of bonding and lone pairs electrons
  • determine the number of ECC
  • determine the shape and geometry of molecule
  • determine the lewis structure of molecule

  • 25. 
    Use the electron dot formula of beryllium chloride to predict its molecular shape.

  • Bent
  • Linear
  • Trigonal Planar
  • Tetrahedral

  • 26. 
    Identify the molecule structure

  • Bent
  • Linear
  • Trigonal Planar
  • Pyramidal

  • 27. 
    What molecular shape is the structure shown here? (BeCl2)

  • linear
  • bent
  • trigonal planar
  • tetrahedral

  • 28. 
    What shape is shown here?

  • Octahedral
  • Tetrahedral
  • Trigonal bipyramidal
  • Seesaw

  • 29. 
    What molecular shape is the structure shown here? (NH4+)

  • linear
  • trigonal planar
  • tetrahedral
  • trigonal pyramidal

  • 30. 
    Use the electron dot formula of sulfur difluoride to predict its molecular shape

  • Bent
  • linear
  • trigonal planar
  • terahedral
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