unnilseptium
unnilseptium
Symbol:
Atomic number: 107
Atomic weight: (262)
Radioactive transition metal. Half-life of approximately 1/500 s. Discovered by the Joint Institute for Nuclear Research at Dubna (U.S.S.R.) in 1976. Confirmed by West German physicists at the Heavy Ion Research Laboratory at Darmstadt.

Elements of periodic system. 2013.

  • unnilseptium — [yo͞on΄əlsep′tē əm] n. former term for BOHRIUM: symbol, Uns …   English World dictionary

  • Unnilseptium — Eigenschaften …   Deutsch Wikipedia

  • Unnilseptium — Bohrium Bohrium Seaborgium …   Wikipédia en Français

  • unnilseptium — /yooh nil sep tee euhm/, n. Chem., Physics. provisional name for the transuranic element with atomic number 107. Symbol: Uns Also called element 107. [ < L un(us) ONE + nil nothing + sept(em) SEVEN + NL ium IUM] * * * …   Universalium

  • unnilseptium — noun bohrium …   Wiktionary

  • unnilseptium — un•nil•sep•ti•um [[t]ˌyu nɪlˈsɛp ti əm[/t]] n. chem. phs provisional name for the transuranic element with atomic number 107 Symbol: Uns • Etymology: 1975–80; < L ūn(us) one+nīl nothing +sept(em) seven+ NL ium ium II …   From formal English to slang

  • unnilseptium — /yooh nil sep tee euhm/, n. Chem., Physics. provisional name for the transuranic element with atomic number 107. Symbol: Uns Also called element 107. [ < L un(us) ONE + nil nothing + sept(em) SEVEN + NL ium IUM] …   Useful english dictionary

  • Bohrium — (pronEng|ˈbɔəriəm) is a chemical element in the periodic table that has the symbol Bh and atomic number 107.It is a synthetic element whose most stable isotope, Bh 270, has a half life of 61 seconds. Chemical experiments confirmed bohrium s… …   Wikipedia

  • Element naming controversy — The names for the chemical elements 104 to 106 were the subject of a major controversy starting in the 1960s, described by some nuclear chemists as the Transfermium Wars[1][2] because it concerned the elements following fermium (element 100) on… …   Wikipedia

  • List of chemistry topics — This page aims to list articles related to chemistry. This is so that those interested in the subject can monitor changes to the pages by clicking on Related Changes in the sidebar and on the bottom of the page.This list is not necessarily… …   Wikipedia