| Caesium
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| appearance as argument number 1 |
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| (atomicNumber Caesium 55) | Mid-level-ontology.kif 29856-29856 | |
| (boilingPoint Caesium (MeasureFn 963.0 KelvinDegree)) |
Mid-level-ontology.kif 30968-30968 | |
| (documentation Caesium EnglishLanguage "Soft silvery-white metallic element belonging to group 1 of the periodic table. One of the three metals which are liquid at room temperature. Cs-133 is the natural, and only stable, isotope. Fifteen other radioisotopes exist. Caesium reacts explosively with cold water, and ice at temperatures above 157K. Caesium hydroxide is the strongest base known. Caesium is the most electropositive, most alkaline and has the least ionization potential of all the elements. Known uses include the basis of atomic clocks, catalyst for the hydrogenation of some organic compounds, and in photoelectric cells. Caesium was discovered by Gustav Kirchoff and Robert Bunsen in Germany in 1860 spectroscopically. Its identification was based upon the bright blue lines in its spectrum. The name comes from the latin word caesius, which means sky blue. Caesium should be considered highly toxic. Some of the radioisotopes are even more toxic.") | Mid-level-ontology.kif 29864-29877 | |
| (externalImage Caesium "http://upload.wikimedia.org/wikipedia/commons/9/ 97/ Cs_TableImage.png") | pictureList.kif 1683-1683 | |
| (meltingPoint Caesium (MeasureFn 301.55 KelvinDegree)) |
Mid-level-ontology.kif 30967-30967 | |
| (names Caesium "Caesium") | Mid-level-ontology.kif 29854-29854 | |
| (roomTempState Caesium Solid) | Mid-level-ontology.kif 33209-33209 | |
| (subclass Caesium ElementalSubstance) | Mid-level-ontology.kif 29853-29853 |
| appearance as argument number 2 |
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| (conventionalShortName "Cs" Caesium) | Mid-level-ontology.kif 29855-29855 | |
| (termFormat ChineseLanguage Caesium "铯") | domainEnglishFormat.kif 12658-12658 | |
| (termFormat ChineseTraditionalLanguage Caesium "銫") | domainEnglishFormat.kif 12657-12657 | |
| (termFormat EnglishLanguage Caesium "caesium") | domainEnglishFormat.kif 12656-12656 |
| antecedent |
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| (=> (and (instance ?ATOM Caesium) (instance ?ATOM Atom)) (measure ?ATOM (MeasureFn 132.90545 Amu))) |
Mid-level-ontology.kif 29858-29862 |
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