Vsepr Theory(General Knowledge > General Science ) Questions and Answers

Question 1. Which of the following correctly matches a compound with its molecular geometry?
  1.    Water (H2O) : linear
  2.    Carbon dioxide (CO2): tetrahedral
  3.    Ammonia (NH3): trigonal planar
  4.    Methane (CH4): tetrahedral
Explanation:-
Answer: Option D. -> Methane (CH4): tetrahedral
Question 2. The atoms in a molecule of water adopt what kind of geometry?
  1.    Linear
  2.    Tetrahedral
  3.    Bent
  4.    Trigonal planar
Explanation:-
Answer: Option C. -> Bent
Question 3. When applying VSEPR theory to predict molecular shape, which of the following do we not need to take into account?
  1.    Valence electrons occupying sigma bonding orbitals
  2.    Valence electrons occupying pi bonding orbitals
  3.    Valence electrons occupying non-bonding orbitals
  4.    none of the above
Explanation:-
Answer: Option C. -> Valence electrons occupying non-bonding orbitals
Question 4. Determine the molecular shape of carbon tetrafluoride
  1.    linear
  2.    trigonal planar
  3.    bent
  4.    tetrahedral
Explanation:-
Answer: Option D. -> tetrahedral
Question 5. VSEPR theory is used to predict
  1.    the number of unshared pairs of electrons in a Lewis structure.
  2.    the number of multiple bonds in a Lewis structure.
  3.    the three-dimensional geometry of a molecule.
  4.    the three-dimensional crystal lattice structure of ionic compounds.
Explanation:-
Answer: Option C. -> the three-dimensional geometry of a molecule.
Question 6. Any molecule with only two atoms must be linear
  1.    180°
  2.    120°
  3.    90°
  4.    60°
Explanation:-
Answer: Option A. -> 180°
Question 7. How many different bond angles will a Trigonal Bipyramidal molecule have?
  1.    1
  2.    2
  3.    3
  4.    4
Explanation:-
Answer: Option B. -> 2
Question 8. Which of the following molecular shapes would have a bond angle of 180 Degrees?
  1.    Bent
  2.    Trigonal Planar
  3.    Tetrahedral
  4.    Linear
Explanation:-
Answer: Option D. -> Linear
Question 9. Which shapes are altered by unshared pairs of electrons?
  1.    Bent and Pyramidal
  2.    Trigonal Planar and Bent
  3.    Tetrahedram and Bipyramidal
  4.    Pyramidal and Linear
Explanation:-
Answer: Option A. -> Bent and Pyramidal
Question 10. What is the bond angle for a pyramidal molecule?
  1.    90
  2.    107
  3.    109.5
  4.    120
Explanation:-
Answer: Option B. -> 107
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