This observation is due to the conversion of [Mo(H₂O)₆]²⁺ from a low spin complex with two unpaired electrons to a high spin complex with four unpaired electrons by the addition of excess KNO₂.

This observation is due to the conversion of [Mo(H₂O)₆]²⁺ from a high spin complex with two unpaired electrons to a low spin complex with four unpaired electrons by the addition of excess KNO₂.

This observation is due to the conversion of [Mo(H₂O)₆]²⁺ from a low spin complex with four unpaired electrons to a high spin complex with two unpaired electrons by the addition of excess KNO₂.

This observation is due to the conversion of [Mo(H₂O)₆]²⁺ from a high spin complex with four unpaired electrons to a low spin complex with two unpaired electrons by the addition of excess KNO₂.