Who is this Danish physicist who made contributions to understanding atomic structure and quantum theory after whom a synthetic radioactive element with a half-life of about a minute is named?
Bohrium:  It is a synthetic element (an element that can be created in a laboratory but is not found in nature) and radioactive; the most stable known isotope, Bh, has a half-life of approximately 61 seconds, though the unconfirmed Bh may have a longer half-life of about 690 seconds.
i don't know