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出典:Wiktionary
出典:『Wiktionary』 (2026/04/12 21:48 UTC 版)
Derived from Ancient Greek ξένον (xénon), which is the neuter of ξένος (xénos, “foreign, strange”).
xenon n (genitive xenī); second declension
Second-declension noun (neuter, Greek-type).
| singular | plural | |
|---|---|---|
| nominative | xenon | xena |
| genitive | xenī | xenōrum |
| dative | xenō | xenīs |
| accusative | xenon | xena |
| ablative | xenō | xenīs |
| vocative | xenon | xena |
出典:Wikipedia
出典:『Wikipedia』 (2011/06/25 17:29 UTC 版)
Xenon is a chemical element with the symbol Xe and atomic number 54. The element name is pronounced
/ˈzɛnɒn/ zen-on or /ˈziːnɒn/ zee-non. A colorless, heavy, odorless noble gas, xenon occurs in the Earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.
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