Db - Dubnium

An artifical element. Dubnium was discovered by Ghiorso and coworkers. Named for Dubna, a Russian town north of Moscow that is home to the Joint Institutes of Nuclear Research.

Atomic number - 105 Density g/mL -

Atomic weight u 262 Melting point K -

Bonding radius A - Boiling point K -

Atomic radius A - Heat of vaporization kJ/mol -

Ionization Potential V - Heat of fusion kJ/mol -

Electronegativity - - Specific heat J/gK -

The oxide is unknown.
Crystal are unknown.

Electron config. : [Rn] 5f¹⁴ 6d³ 7s²

Isotopes of Db: Click mass number for decay process, product for element page.

255 1.6 sec a/SF,9.600 Lr-251/? 255.0	256 2.6 sec a/EC/SF,9.500 Lr-252/Rf-256/? 256.0	257 1.3 sec a/EC/SF,9.310 Lr-253/Rf-257/? 257.10789	258 20 sec a/EC/SF,5.500 Lr-254/Rf-258/? 258.10939	259 a,2.450 MeV Lr-255 259.10971	260 1.52 sec a/EC/SF,9.370 Lr-256/Rf-260/? 260.11143	261 1.8 sec a/SF,9.270 Lr-257/? 261.11207
262 34 sec a/EC/SF,9.210 Lr-258/Rf-262/? 262.11437	263 27 sec a/SF,9.030 Lr-259/? 263.11528	264 ,9.690 MeV 264.11766	265 ,10.800 MeV 265.11884	266 ,10.820 MeV 266.12131	MASS abund. Halflife Particle, Energy Decay Product(s) Isotopic Mass

Atomic number	-	105	Density	g/mL	-
Atomic weight	u	262	Melting point	K	-
Bonding radius	A	-	Boiling point	K	-
Atomic radius	A	-	Heat of vaporization	kJ/mol	-
Ionization Potential	V	-	Heat of fusion	kJ/mol	-
Electronegativity	-	-	Specific heat	J/gK	-
The oxide is unknown.			Crystal are unknown.
Electron config. : [Rn] 5f¹⁴ 6d³ 7s²