Dubnium
Elemental State Db
Electron Configuration   
First Ionization Potential  
Electron Affinity  
Z*  
Pauling Electronegativity   
Covalent Radius  
Metallic Radius  
Ionic Radius   
van der Waal's Radius   
Melting Point   
Boiling Point   
Density   
Other Properties Man made; all isotopes are radioactive

261Db half-life = 1.8 seconds 

262Db half-life = 40 seconds