Dubnium

Kemiallinen merkki: Db
Järjestysluku: 105
Kategoria: siirtymämetallit
Ryhmä: 5
Jakso: 7
Lohko: d
Moolimassa: [268] g/mol
Elektronia kuorilla: 2, 8, 18, 32, 32, 11, 2
CAS-numero: 53850-35-4
Olomuoto: oletettavasti kiinteä
Tiheys: unknown
Sulamispiste: unknown
Kiehumispiste: unknown
Kiderakenne: unknown
Hapetusluvut: 5
Elektronegatiivisuus: unknown
Nimen alkuperä: Dubna
Nimen tarkoitus: the city that contains the Russian Joint Institute for Nuclear Research where the element was found
Faktoja:
- its most stable isotope is dubnium-268 with a half life of 28 hours
- before dubnium received its current name, some candidates were hahnium (after the German physicist Otto Hahn), nielsbohrium (after the Danish nuclear physicist Niels Bohr) and joliotium (after the French physicist Frédéric Joliot-Curie)