The concept of hybridization was introduced to explain which of the following drawbacks of VBT?
Correct answer: C. It could not explain the tetravalency of carbon
- A. It does not explain paramagnetism of O₂
- B. It does not explain odd electron systems
- C. It could not explain the tetravalency of carbon
- D. All of the above
Explanation
The ground state electron configuration of carbon only has two unpaired electrons, suggesting it should form two bonds. The concept of hybridization was introduced to explain how carbon can promote an electron and mix its orbitals to form four identical sp³ hybrid orbitals, thus explaining its observed tetravalency.
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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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