| 31. | The lanthanide elements are the group of elements with atomic number increasing from 57 ( lanthanum ) to 71 ( lutetium ).
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| 32. | The ionic radius drops from 103 pm for lanthanum ( III ) to 86.1 pm for lutetium ( III ).
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| 33. | The ionic radius drops from 102 pm for cerium ( III ) to 86.1 pm for lutetium ( III ).
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| 34. | All of these researchers found lutetium as an impurity in the mineral ytterbia, which was previously thought to consist entirely of ytterbium.
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| 35. | Aqueous solutions of most lutetium salts are colorless and form white crystalline solids upon drying, with the common exception of the iodide.
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| 36. | Currently, the most promising high-index lens material is lutetium aluminum garnet, with a refractive index of 2.14.
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| 37. | Yttrium ( III ) oxide and lutetium ( III ) oxide exhibit weak basic character, but scandium ( III ) oxide is basic.
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| 38. | The isotopes of lutetium range in atomic weight from 149.973 ( 150 Lu ) to 183.961 ( 184 Lu ).
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| 39. | This treatment involves attaching a radionuclide ( Lutetium-177 or Yttrium-90 ) to a somatostatin analogue ( octreotate or octreotide ).
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| 40. | Sessler said he has seen evidence that Lutetium Texaphyrin can destroy a brain tumor, but the drug may be years away from government approval.
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