| 释义 |
Definition of dubnium in English: dubniumnoun ˈdʌbnɪəmˈdəbnēəm mass nounThe chemical element of atomic number 105, a very unstable element made by high-energy atomic collisions. See also hahnium, joliotium Example sentencesExamples - Following up on berkelium, dubnium and californium, researchers at the University of Berkely in California, stumbled upon am element with atomic number 117 about a year ago.
- Similar controversies attended the much more recent synthesis and naming of the heaviest element of the group, dubnium.
- Nine isotopes of Dubnium are now recognized.
- For instance, after five alpha particles have been emitted we are left with element 105, which is called dubnium.
Origin 1990s: modern Latin, from Dubna in Russia, site of the Joint Nuclear Institute. Definition of dubnium in US English: dubniumnounˈdəbnēəm The chemical element of atomic number 105, a very unstable element made by high-energy atomic collisions. See also hahnium, joliotium Example sentencesExamples - Following up on berkelium, dubnium and californium, researchers at the University of Berkely in California, stumbled upon am element with atomic number 117 about a year ago.
- Similar controversies attended the much more recent synthesis and naming of the heaviest element of the group, dubnium.
- For instance, after five alpha particles have been emitted we are left with element 105, which is called dubnium.
- Nine isotopes of Dubnium are now recognized.
Origin 1990s: modern Latin, from Dubna in Russia, site of the Joint Nuclear Institute. |