Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1308-0274-5 |
Объём: | 80 страниц |
Масса: | 141 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
High Quality Content by WIKIPEDIA articles! Copernicium is a synthetic radioactive chemical element with the symbol Cn and atomic number 112. It was first created in 1996 by the Gesellschaft fur Schwerionenforschung (GSI). Copernicium is currently the highest-numbered element to be officially recognised by IUPAC. The most stable isotope discovered to date is 285Cn with a half-life of ?30 s, although evidence exists that 285Cn may have a nuclear isomer with a much longer half-life of 8.9 min. In total, about 75 atoms of copernicium have been detected using various nuclear reactions. Recent experiments suggest that copernicium behaves as a typical member of group 12, demonstrating properties consistent with a volatile metal.
Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.