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VALENCE BOND MCQs

Total Questions : 20 | Page 2 of 2 pages
Question 11. When you are asked to find bond polarity, compare EN values of each bonding atom to the central atom
  1.    true
  2.    false
 Discuss Question
Answer: Option A. -> true
Question 12. The electronegativity difference in the bonds of CCl4 (carbon tetrachloride) is:
  1.    0.4
  2.    0.5
  3.    9.5
  4.    5.5
 Discuss Question
Answer: Option B. -> 0.5
Question 13. Which molecule contains bonds with a GREATER polarity?
  1.    HCl
  2.    CCl4
 Discuss Question
Answer: Option A. -> HCl
Question 14. Heitler and London introduced which theory?
  1.    VSEPR Theory
  2.    Valence Bond Theory
  3.    Molecular Orbital Theory
  4.    Covalent Theory
 Discuss Question
Answer: Option B. -> Valence Bond Theory
Question 15. Which molecule contains bonds of GREATER polarity?
  1.    H2O
  2.    OF2
 Discuss Question
Answer: Option A. -> H2O
Question 16. How many electrons are represented by a single straight line in a Lewis structure?
  1.    1
  2.    2
  3.    4
  4.    6
 Discuss Question
Answer: Option B. -> 2
Question 17. Energy released during bond formation is called
  1.    Bond Creation Energy
  2.    Disassociation Energy
  3.    Binding Energy of Molecules
  4.    Bond Enthalpy
 Discuss Question
Answer: Option D. -> Bond Enthalpy
Question 18. If Boron bonds with Hydrogen, a ____________ bond forms
  1.    polar covalent
  2.    nonpolar covalent
  3.    metallic
  4.    ionic
 Discuss Question
Answer: Option B. -> nonpolar covalent
Question 19. A bond with a partially negative end and a partially positive end is:
  1.    ionic
  2.    polar
  3.    non-polar
  4.    isometric
 Discuss Question
Answer: Option B. -> polar
Question 20. A diatomic molecule like O2 is always_______ because electrons are shared ________
  1.    nonpolar; equally
  2.    polar; equally
  3.    nonpolar; unequally
  4.    nonpolar; unequally
 Discuss Question
Answer: Option A. -> nonpolar; equally

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