Columbia Encyclopedia
Search results
7 results found
bohrium
(Encyclopedia)bohrium bôrˈēəm [key], artificially produced radioactive chemical element; symbol Bh; at. no. 107; mass number of most stable isotope 270; m.p., b.p., sp. gr., and valence unknown. Situated in Gro...Bh
(Encyclopedia)Bh, symbol for the element bohrium. ...Periodic Table of the Elements: Bohrium
(Encyclopedia)Periodic Table of the Elements: Bohrium ...Ns
(Encyclopedia)Ns, formerly the suggested symbol for the name nielsbohrium, which was applied variously to two elements, now called bohrium and dubnium. ...nielsbohrium
(Encyclopedia)nielsbohrium nēlzbôrˈēəm [key], symbol Ns, former suggested name for both element 105, now called dubnium, and element 107, now called bohrium. ...transuranium elements
(Encyclopedia)transuranium elements, in chemistry, radioactive elements with atomic numbers greater than that of uranium (at. no. 92). All the transuranium elements of the actinide series were discovered as synthet...Elements (table)
(Encyclopedia)Elements 1 Parentheses indicate most stable isotope; brackets enclose lower and upper bounds of weight variation. ...Browse by Subject
- Earth and the Environment +-
- History +-
- Literature and the Arts +-
- Medicine +-
- People +-
- Philosophy and Religion +-
- Places +-
- Africa
- Asia
- Australia and Oceania
- Britain, Ireland, France, and the Low Countries
- Commonwealth of Independent States and the Baltic Nations
- Germany, Scandinavia, and Central Europe
- Latin America and the Caribbean
- Oceans, Continents, and Polar Regions
- Spain, Portugal, Italy, Greece, and the Balkans
- United States, Canada, and Greenland
- Plants and Animals +-
- Science and Technology +-
- Social Sciences and the Law +-
- Sports and Everyday Life +-