#wikipedia.org. roentgenium. Roentgenium (German: [ʁœntˈɡeːni̯ʊm] ) is a synthetic chemical element; it has symbol Rg and atomic number 111. It is extremely radioactive and can only be created in a laboratory. The most stable known isotope, roentgenium-282, has a half-life of 130 seconds, although the unconfirmed roentgenium-286 may have a longer half-life of about 10.7 minutes
#Business #Science #commodities market
Filter: #2024-11-17 × #nil ×
Showing 1-1 of 1 item - Time: 0.1435 s. Memory: 15.3471 mb.