31. Lanthanide probes ligands must meet several chemical requirements for the probes to work properly.32. The solubility and insolubility of trivalent and tetravalent actinides is like that of lanthanide salts. 33. Like most of the lanthanides , lanthanum has a hexagonal crystal structure at room temperature. 34. The stability has in part been correlated to differences in volatility between the lanthanide metals. 35. EDTA was used in the separation of the lanthanide metals by ion-exchange chromatography. 36. This leads to " lanthanide contraction ". 37. The elements following the lanthanides in the periodic table are influenced by the lanthanide contraction. 38. The elements following the lanthanides in the periodic table are influenced by the lanthanide contraction. 39. Several systems have been proposed which combine MRI capability with lanthanides probes in dual assays. 40. This role is traditionally filled by lanthanide metal ions embedded in an insulating host lattice.
