| 21. | Aquo ions of divalent metal ions are less acidic than those of trivalent cations.
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| 22. | Here we have only considered the action of the Hamiltonian constraint on trivalent vertices.
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| 23. | The solubility and insolubility of trivalent and tetravalent actinides is like that of lanthanide salts.
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| 24. | When the trivalent ion is aluminium, the alum is named after the monovalent ion.
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| 25. | Trivalent organoaluminium reagents, such as trimethylaluminium, have been shown to accelerate this reaction.
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| 26. | It is a precursor to the coenzyme divalent or trivalent ions through the small intestine.
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| 27. | Like most rare earth elements, praseodymium most readily forms trivalent Pr ( III ) ions.
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| 28. | The third category is trivalent verbs which make an obligatory reference to a third party argument.
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| 29. | The substituent groups may be divalent or trivalent, yielding ions such as iminium and nitrilium.
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| 30. | In the cobalamins, cobalt normally exists in the trivalent state, Co ( III ).
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