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Livermorium is a synthetic chemical element; it has symbol Lv and atomic number 116. It is an extremely radioactive element that has only been created in a laboratory setting and has not been observed in nature. The element is named after the Lawrence Livermore National Laboratory in the United States, which collaborated with the Joint ...
On the periodic table of the elements it is a p-block element, a member of group 18 and the last member of period 7. Its only known isotope, oganesson-294 , is highly radioactive , with a half-life of 0.7 ms and, as of 2020, [update] only five atoms have been successfully produced. [ 19 ]
Classical elements. According to ancient and medieval science, aether (/ ˈiːθər /, alternative spellings include æther, aither, and ether), also known as the fifth element or quintessence, is the material that fills the region of the universe beyond the terrestrial sphere. [1] The concept of aether was used in several theories to explain ...
The Jindo dog (Korean: 진돗개; RR: Jindo-gae) is an indigenous dog [1][2] native to the island of Jindo in South Korea. It is also known as Jindo-gyeon (진도견; Jindo-gyeon) and formerly known as the Chindo dog. It is one of South Korea's Natural Treasures. It has a reputation for being loyal and good at tracking things. [3]
List of elements by stability of isotopes. Isotope half-lives. The darker more stable isotope region departs from the line of protons (Z) = neutrons (N), as the element number Z becomes larger. This is a list of chemical elements by the stability of their isotopes. Of the first 82 elements in the periodic table, 80 have isotopes considered to ...
Shintō Musō-ryū. No single leader. 25th and last (unofficial) headmaster was Takaji Shimizu. Shintō Musō-ryū, or Shindō Musō-ryū (神道夢想流), a most commonly known by its practice of jōdō, is a traditional school (koryū) of the Japanese martial art of jōjutsu, or the art of wielding the short staff (jō). The technical ...
Einsteinium is a synthetic chemical element; it has symbol Es and atomic number 99. It is named after Albert Einstein and is a member of the actinide series and is the seventh transuranium element. Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion in 1952. Its most common isotope, einsteinium-253 (half ...
Unbinilium, also known as eka-radium or element 120, is a hypothetical chemical element; it has symbol Ubn and atomic number 120. Unbinilium and Ubn are the temporary systematic IUPAC name and symbol, which are used until the element is discovered, confirmed, and a permanent name is decided upon. In the periodic table of the elements, it is ...