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Valence Bond Theory - Coordination Compounds Video Lecture - Class 12
FAQs on Valence Bond Theory - Coordination Compounds Video Lecture - Class 12
| 1. What is valence bond theory? |  |
| 2. How does valence bond theory explain the bonding in coordination compounds? | |
Ans. Valence bond theory explains the bonding in coordination compounds by considering the formation of coordination bonds through the overlap of atomic orbitals. In coordination compounds, the central metal ion (usually a transition metal) donates its empty d orbitals to form coordinate covalent bonds with ligands. These ligands, which are molecules or ions with lone pairs of electrons, use their lone pairs to overlap with the empty d orbitals of the metal ion, resulting in the formation of coordination bonds.
| 3. What is the role of hybridization in valence bond theory? | |
Ans. Hybridization plays a significant role in valence bond theory as it determines the shape and geometry of molecules and coordination compounds. Hybridization is the process of combining atomic orbitals to form hybrid orbitals with different shapes and orientations. These hybrid orbitals overlap with other atomic or hybrid orbitals to form bonds. The type and arrangement of hybrid orbitals determine the geometry of the molecule or coordination compound.
| 4. Can valence bond theory explain the magnetic properties of coordination compounds? | |
Ans. Yes, valence bond theory can explain the magnetic properties of coordination compounds. According to this theory, the presence of unpaired electrons in the overlapping orbitals of the central metal ion and ligands leads to the formation of coordination compounds with magnetic properties. The magnetic behavior of coordination compounds can be understood by considering the nature and arrangement of these unpaired electrons, which can interact with external magnetic fields.
| 5. What are the limitations of valence bond theory? | |
Ans. Valence bond theory has certain limitations. It does not provide a complete picture of molecular or coordination compound properties, as it focuses mainly on the bonding between atoms. It does not consider the molecular orbital theory, which provides a more comprehensive understanding of the electronic structure of molecules. Valence bond theory also does not explain the phenomenon of resonance, where a molecule can have multiple valid Lewis structures. Additionally, valence bond theory does not account for the shapes and properties of molecules involving elements beyond the second period of the periodic table.
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Mar 02, 2025
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