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[mn(h2o)6]2+ electronic spectrum
Accepted Answer
The electronic spectrum of [Mn(H2O)6]2+ is characterized by weak, spin-forbidden d-d transitions. Mn2+ has a d5 configuration, and the high spin state has 5 unpaired electrons. The transitions involve promoting an electron from a lower energy d orbital to a higher energy d orbital, but these transitions are spin-forbidden, which means they are weak. The weak bands in the visible region of the spectrum are responsible for the pale pink color of the complex.
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