State whether the following transition metal complexes would be diamagnetic orparamagnetic. (Assume all low spin complexes)a. [MoCl6]2-
Question
State whether the following transition metal complexes would be diamagnetic orparamagnetic. (Assume all low spin complexes)a. [MoCl6]2-
Solution
The [MoCl6]2- complex has a molybdenum (Mo) ion in the center. Molybdenum is in the 6th group of the periodic table, so it has 6 electrons in its 5d orbital.
In the [MoCl6]2- complex, the Mo ion has a charge of +4 (since the overall charge of the complex is -2 and each of the 6 Cl- ions contributes -1). This means that the Mo ion has lost 4 electrons.
Since the 5d orbital of Mo originally had 6 electrons, losing 4 electrons leaves 2 unpaired electrons in the 5d orbital.
Therefore, the [MoCl6]2- complex is paramagnetic because it has unpaired electrons.
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