Quiz  /  Vsepr Theory Class 12 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. 
    How many unshared pairs of electrons will a pyramidal molecule have?

  • 1
  • 2
  • 3
  • 4

  • 5. 
    How many lone pairs are in this molecule's structure?

  • 6
  • 2
  • 0
  • 4

  • 6. 
    What is the molecular shape of a silicon dioxide molecule?

  • linear
  • trigonal planar
  • bent
  • tetrahedral

  • 7. 
    What shape would PH3 have?

  • Trigonal Planar
  • Trigonal pyramidal
  • Bent
  • Linear

  • 8. 
    Who could this be?

  • CO2
  • NH3
  • H2S
  • CH4

  • 9. 
    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.

  • 10. 
    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°

  • 11. 
    What molecular shape is the structure shown here? (H2O)

  • tetrahedral
  • trigonal planar
  • bent
  • trigonal pyramidal

  • 12. 
    The bond angle for a trigonal planar molecule is

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

  • 13. 
    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

  • 14. 
    Use the electron dot formula of beryllium chloride to predict its molecular shape.

  • Bent
  • Linear
  • Trigonal Planar
  • Tetrahedral

  • 15. 
    What molecular shape is the structure shown here? (BeCl2)

  • linear
  • bent
  • trigonal planar
  • tetrahedral

  • 16. 
    What shape is shown here?

  • Octahedral
  • Tetrahedral
  • Trigonal bipyramidal
  • Seesaw

  • 17. 
    Use the electron dot formula of sulfur difluoride to predict its molecular shape

  • Bent
  • linear
  • trigonal planar
  • terahedral

  • 18. 
    The molecular shape represent by the image below is __________

  • Tetrahedral
  • Trigonal Planar
  • Octahedral
  • Trigonal bipyramidal

  • 19. 
    The molecular geometry represent by the image below is _______

  • Tetrahedral
  • Trigonal planar
  • Trigonal pyramidal
  • Trigonal bipyramidal

  • 20. 
    How many lone pairs of electrons are on the P atom in PF3?

  • 1
  • 2
  • 3
  • 0

  • 21. 
    Is this molecule polar?

  • Yes
  • No

  • 22. 
    The general formula for TETRAHEDRAL shape is __________

  • AB2
  • AB3
  • AB4
  • AB

  • 23. 
    What molecular geometry would PH3 have?

  • Trigonal Pyramidal
  • Trigonal Bipyramidal
  • Bent
  • Linear

  • 24. 
    Which of the following molecular shapes would have a bond angle of 180 Degrees?

  • Bent
  • Trigonal Planar
  • Tetrahedral
  • Linear

  • 25. 
    AB3 is a symbol for molecular shape __________________

  • Tetrahedral
  • Linear
  • Trigonal planar
  • Trigonal pyramidal

  • 26. 
    Valence-Shell electrons pair repulsion theory is used to predict

  • physical properties of compound
  • type of chemical bonding
  • molecular shape
  • solubility

  • 27. 
    VSEPR theory is used to predict

  • the number of unshared pairs of electrons in a Lewis structure.
  • the number of multiple bonds in a Lewis structure.
  • the three-dimensional geometry of a molecule.
  • the three-dimensional crystal lattice structure of ionic compounds.

  • 28. 
    Which of the following shapes has an unshared pairs of electrons on the central atom?

  • Bipyramidal
  • Bent
  • Trigonal Planar
  • Tetrahedral

  • 29. 
    Determine the electron geometry (eg) and molecular geometry (mg) of XeF4 (Lewis structure is shown) .

  • eg = tetrahedral, mg = tetrahedral
  • eg = linear, mg = linear
  • eg = octahedral, mg = square planar
  • eg = trigonal bipyramidal, mg = tetrahedral
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