The paramagnetic behavior of molecules such as oxygen molecules cannot be explained by:
Correct answer: C. Valence bond theory
- A. Molecular orbital theory
- B. Hybridization
- C. Valence bond theory
- D. Valence shell electron pair repulsion theory
Explanation
Molecular Orbital Theory (MOT): This theory accounts for paramagnetism by considering the arrangement of electrons in molecular orbitals, where unpaired electrons in these orbitals lead to paramagnetic properties.Valence Bond Theory (VBT): While VBT primarily focuses on the formation of bonds and hybridization, it can also address unpaired electrons in certain cases, indirectly linking to paramagnetism.Valence Shell Electron Pair Repulsion (VSEPR) Theory: This theory is primarily used to predict molecular shapes based on the repulsion between electron pairs. It does not consider the spin of electrons or their distribution in orbitals, and thus does not provide an explanation for paramagnetism.Hybridization: This concept can relate to paramagnetism when discussing the formation of bonds and the arrangement of unpaired electrons in hybrid orbitals.
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Chemical bonding explains molecular shape through VSEPR theory and distinguishes sigma bonds from pi bonds. Questions involve hybridization, bond angles, dipole moment and bond energy, including how electron-pair repulsion determines geometry and how bond polarity differs from the overall polarity of a molecule.
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