shortest-lived
21George Q. Cannon — LDSApostleshipinfo English name = George Q. Cannon birth name=George Quayle Cannon birth date=birth date|1827|01|11 birthplace=Liverpool, England death date=death date and age|1901|04|12|1827|01|11 deathplace=Monterey, California president who… …
22Isotopes of oxygen — Late in a massive star s life, 16O concentrates in the O shell, 17O in the H shell and 18O in the He shell There are three stable isotopes of oxygen that lead to oxygen (O) having a standard atomic mass of 15.9994(3) u. 17 radioactive isotopes… …
23Isotopes of nitrogen — Natural Nitrogen (N) consists of two stable isotopes, nitrogen 14, which makes up the vast majority of naturally occurring nitrogen, and nitrogen 15. Fourteen radioactive isotopes (radioisotopes) have also been found so far, with atomic masses… …
24Nonthermal plasma — A nonthermal plasma is in general any plasma which is not in thermodynamic equilibrium, either because the ion temperature is different from the electron temperature, or because the velocity distribution of one of the species does not follow a… …
25Dravidian parties — Articles related to Dravidian politics Varied topics Dravidian movement Periyar …
26Yuan Dynasty — Great Yuan 大元 Dai Ön Ulus ← …
27Coral reef fish — The fish that inhabit coral reefs are numerous and diverse. Coral reef fish are fish which live amongst or in close relation to coral reefs. Coral reefs form complex ecosystems with tremendous biodiversity. Among the myriad inhabitants, the fish… …
28Beryllium — (pronEng|bəˈrɪliəm) is a chemical element with the symbol Be and atomic number 4. A bivalent element, beryllium is a steel grey, strong, light weight yet brittle alkaline earth metal. It is primarily used as a hardening agent in alloys, most… …
29Seaborgium — (pronEng|siːˈbɔrgiəm) is a chemical element in the periodic table that has the symbol Sg and atomic number 106, Image of Seaborgium . Seaborgium is a synthetic element whose most stable isotope 271Sg has a half life of 1.9 minutes. Chemistry… …
30Roentgenium — (pronEng|rɛntˈgɛniəm, IPA|/rʌntˈdʒɛniəm/ [ [http://dictionary.reference.com/browse/Roentgenium Roentgenium Definitions from Dictionary.com ] ] ) is a chemical element in the periodic table that has the symbol Rg and atomic number 111.It is a… …
