| NOUN | substance | Bk, berkelium, atomic number 97 | a radioactive transuranic element |
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| Meaning | A radioactive transuranic element; discovered by bombarding americium with helium. | |
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| Synonyms | berkelium, atomic number 97 | |
| Broader | metallic element, metal | Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
| Catalan | berkeli, número atòmic 97 | |
| Spanish | berkelio | |