Template:Infobox dubnium

Dubnium,  ₁₀₅Db

General properties
Pronunciation	Template:Infobox element/pronunciation
Standard atomic weight (Ar, standard)	Template:Infobox element/standard atomic weight
Mass number	Template:Infobox element/symbol-to-most-stable-isotope (most stable isotope)
Dubnium in the periodic table
Template:Infobox element/periodic table
Atomic number (Z)	105
Group	Template:Infobox element/group
Period	period 7
Block	d-block
Element category	Template:Infobox element/category format
Electron configuration	[Rn] 5f14 6d3 7s2
Electrons per shell	2, 8, 18, 32, 32, 11, 2
Physical properties
Phase at STP	solid (predicted)
Density (near r.t.)	29.3 g/cm3 (predicted)
Atomic properties
Oxidation states	Template:Infobox element/symbol-to-oxidation-state
[[Ionization energy|Template:Engvar energies]]	1st: 665 kJ/mol 2nd: 1547 kJ/mol 3rd: 2378 kJ/mol (more) (all but first estimated)
Atomic radius	empirical: 139 pm (estimated)
Covalent radius	149 pm (estimated)
Template:Infobox element/spectral lines
Other properties
Crystal structure	​Template:Infobox element/crystal structure (predicted) Template:Infobox element/crystal structure
CAS Number	53850-35-4
History
Naming	after Dubna, Moscow Oblast, Russia, site of Joint Institute for Nuclear Research
Discovery	independently by the Lawrence Berkeley Laboratory and the Joint Institute for Nuclear Research (1970)
Main isotopes of dubnium
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