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Which coordination complex has the least intense peaks in uv-vis spectrum? [ti(h2o)6]2+, [v(h2o)6]2+,[mn(h2o)6]2+,[ni(h2o)6]2+

Accepted Answer

[Mn(H2O)6]2+ will have the least intense peaks in the UV-Vis spectrum. This is because Mn(II) has a d5 electronic configuration, making it a high-spin complex with weak ligand field splitting. This results in a large energy gap between the d orbitals, leading to absorption in the UV region which is not visible in the UV-Vis spectrum.

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