| Actinium
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| appearance as argument number 1 |
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| (atomicNumber Actinium 89) | Mid-level-ontology.kif 27023-27023 | |
| (boilingPoint Actinium (MeasureFn 3470 KelvinDegree)) |
Mid-level-ontology.kif 27549-27549 | |
| (documentation Actinium EnglishLanguage "Silvery radioactive metallic element, belongs to group 3 of the periodic table. The most stable isotope, Ac-227, has a half-life of 217 years. Ac-228 (half-life of 6.13 hours) also occurs in nature. There are 22 other artificial isotopes, all radioactive and having very short half-lives. Chemistry similar to lanthanum. Used as a source of alpha particles. Discovered by A. Debierne in 1899.") | Mid-level-ontology.kif 27030-27035 | |
| (externalImage Actinium "http://upload.wikimedia.org/wikipedia/commons/d/ dd/ Ac-TableImage.png") | pictureList.kif 1618-1618 | |
| (meltingPoint Actinium (MeasureFn 1320 KelvinDegree)) |
Mid-level-ontology.kif 27548-27548 | |
| (names Actinium "Actinium") | Mid-level-ontology.kif 27021-27021 | |
| (subclass Actinium ElementalSubstance) | Mid-level-ontology.kif 27020-27020 |
| appearance as argument number 2 |
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| (conventionalShortName "Ac" Actinium) | Mid-level-ontology.kif 27022-27022 | |
| (termFormat ChineseLanguage Actinium "锕") | domainEnglishFormat.kif 5367-5367 | |
| (termFormat ChineseTraditionalLanguage Actinium "錒") | domainEnglishFormat.kif 5366-5366 | |
| (termFormat EnglishLanguage Actinium "actinium") | domainEnglishFormat.kif 5365-5365 |
| antecedent |
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| (=> (and (instance ?ATOM Actinium) (instance ?ATOM Atom)) (measure ?ATOM (MeasureFn 227 Amu))) |
Mid-level-ontology.kif 27024-27028 |
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