Symbol Name Atomic Number Atomic Weight Group Number
Bh Bohrium 107 264 7


Standard State: Presumably a solid at 298 K
Color: Unknown, but probably metallic and silvery white or gray in appearance

Bohrium is a synthetic element that is not present in the environment at all. The German discoverers at GSI proposed the name Nielsbohrium (symbol Ns) after Niels Bohr. IUPAC is happy to name an element after Bohr, but it suggested Bohrium (Bh) on the grounds that the first name of a person does not appear in the names of any other element named after a person. This seems to have been accepted by all concerned. Only a few atoms of element 107, Bohrium, have ever been made. The first atoms were made through a nuclear reaction involving fusion of an isotope of lead with one of chromium.