Which of the following statement is not applicable to Valence Bond Theory?
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VBT explains bonding and hybridisation in complexes, but colour, detailed magnetic behaviour, and ligand strength are better explained by Crystal Field Theory.
It does not give quantitative interpretation of magnetic data.
It does not distinguish between weak and strong ligands.
It explains the colour exhibited by coordination compounds.
It does not make exact predictions regarding the structures of 4-coordinate complexes.
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The Correct Option isC
Solution and Explanation
Step 1: Understanding the Concept:
Valence Bond Theory (VBT) explains the bonding in complexes using hybridization and overlap of atomic orbitals. Step 2: Formula Application:
VBT successfully predicts the geometry (Shape) and magnetic behavior (Paramagnetic/Diamagnetic) qualitatively but has significant limitations. Step 3: Explanation:
VBT cannot explain the electronic spectra or the colour of coordination compounds. Colour is explained by the Crystal Field Theory (CFT) through d-d transitions. Step 4: Final Answer:
Statement (c) is not applicable (it is a limitation of VBT, not a feature).