9.1: Orbitals and Theories of Chemical Bonding
- Page ID
- 170325
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Molecular Orbital and Valence Bond Theory
Exercise \(\PageIndex{1}\)
Which of the following statements concerning molecular orbital (MO) bond theory is/are INCORRECT?
- MO theory can describe molecular bonding in excited states.
- Molecular orbitals are obtained from the combination of atomic orbitals.
- MO theory predicts that electrons are delocalized over the molecule through molecular orbitals.
a. 1 only b. 2 only c. 3 only d. none e. 1, 2, and 3
- Answer
-
d. none
Exercise \(\PageIndex{2}\)
Which of the following statements concerning valence bond (VB) theory is/are INCORRECT?
- VB theory can describe molecular bonding in excited states.
- VB theory assumes that electrons are localized between pairs of atoms.
- VB theory predicts localized lone pairs of electrons.
a. 1 only b. 2 only c. 3 only d. 2 and 3 e. 1, 2, and 3
- Answer
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a. 1 only
Exercise \(\PageIndex{3}\)
Which theory, valence bond or molecule orbital, correctly predicts the existence of paramagnetic molecules?
- Answer
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Molecular orbital theory