| 31. | Apparently these are known as the minor actinides.
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| 32. | The actinide series derives its name from the first element in the series, actinium.
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| 33. | The solubility and insolubility of trivalent and tetravalent actinides is like that of lanthanide salts.
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| 34. | The actinide elution sequence is reversed from that of the cation-exchange resin column.
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| 35. | These fast reactors are better suited for the transmutation of other actinides than thermal reactors.
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| 36. | Only zirconolite and perovskite can accommodate actinides.
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| 37. | Fast fission or fission of some heavier actinides will produce 121m Sn at higher yields.
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| 38. | These are actinides other than uranium and plutonium and include neptunium, americium and curium.
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| 39. | All of the transuranic actinides are unstable.
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| 40. | After production, the fermium must be separated from other actinides and from lanthanide fission products.
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