| 31. | The most important feature of actinium is its ability to accumulate and remain in the surface layer of skeletons.
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| 32. | Adsorption from the digestive tract is much smaller ( ~ 0.05 % ) for actinium than radium.
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| 33. | The " Ac " is not to be confused with the abbreviation for the chemical element actinium.
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| 34. | I know that the specific method I have to use takes into account the position of Lanthanum and Actinium.
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| 35. | As it decays, actinium-225 produces three daughter atoms, each of which also gives out alpha particles.
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| 36. | As with most lanthanides and many actinides, actinium assumes oxidation state + 3 in nearly all its chemical compounds.
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| 37. | The close similarity of physical and chemical properties of actinium and lanthanum makes separation of actinium from the ore impractical.
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| 38. | The close similarity of physical and chemical properties of actinium and lanthanum makes separation of actinium from the ore impractical.
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| 39. | Actinium reacts rapidly with oxygen and moisture in air forming a white coating of actinium oxide that impedes further oxidation.
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| 40. | Actinium reacts rapidly with oxygen and moisture in air forming a white coating of actinium oxide that impedes further oxidation.
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