| 1. | Another known form of solid tetravalent americium chloride is KAmF 5.
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| 2. | Curium can be tetravalent in solids ( fluoride, dioxide ).
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| 3. | Tetravalent americium has also been observed in the aqueous phase.
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| 4. | As tetravalent transition metals, all three elements form various ionic radii.
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| 5. | Pellets of 99.9 % pure tetravalent transition metal.
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| 6. | There is some confusion about whether the oxidised manganese is tetravalent or trivalent.
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| 7. | It is believed to exhibit resonance between its tetravalent and divalent carbon forms.
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| 8. | Also . . . how do you get resonance in a tetravalent system?
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| 9. | Tetravalent protactinium is chemically similar to uranium ( IV ) and thorium ( IV ).
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| 10. | The solubility and insolubility of trivalent and tetravalent actinides is like that of lanthanide salts.
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