出典:Wiktionary
ununseptium (uncountable)
Derived from ūn(us) (“one”) + ūn(us) + sept(em) (“seven”) + -ium (chemical element suffix), in reference to the element's atomic number (117).
Second-declension noun (neuter).
Case | Singular | Plural |
---|---|---|
Nominative | ūnūnseptium | ūnūnseptia |
Genitive | ūnūnseptiī | ūnūnseptiōrum |
Dative | ūnūnseptiō | ūnūnseptiīs |
Accusative | ūnūnseptium | ūnūnseptia |
Ablative | ūnūnseptiō | ūnūnseptiīs |
Vocative | ūnūnseptium | ūnūnseptia |
出典:Wikipedia
出典:『Wikipedia』 (2011/06/25 07:36 UTC 版)
Ununseptium (i/uːnuːnˈsɛptiəm/ oon-oon-sep-tee-əm) is the temporary name of the chemical element with temporary symbol Uus and atomic number 117. Six atoms were detected by a joint Russia–US collaboration at Dubna, Moscow Oblast, Russia, in 2009–10. Although it is currently placed as the heaviest member of the halogen family, there is no experimental evidence that the chemical properties of ununseptium match those of the lighter members like iodine or astatine and theoretical analysis suggests there may be some notable differences.