Elements
105

Db

Dubnium

Dubnium (Db) is a radioactive metal that has the atomic number 105 in the periodic table, its appearance is not fully known due to the minuscule amounts produced of it. It is a Transition metal in Group 5. It has the symbol Db.

Dubnium is a synthetic element created in laboratories. It has a short half life of 28 hours which makes its research very difficult. It does not occur in the earth’s crust naturally. It’s discovery was claimed by both the Russian institute for nuclear research and America Lawrence Berkeley Laboratory in 1970. the dispute was resolved in 1993 by IUPAC that credited its discovery to Dubna. The name Dubnium is drawn from the name of the research town. As so little of it has been created the melting and boiling point have not been analysed.

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FAQ's

What is the Melting Point for Dubnium?

Dubnium has a Melting Point of °F, meaning at °F it will turn to a liquid.

What is the Boiling Point for Dubnium?

Dubnium has a Boiling Point of °F, meaning at °F it will turn to a Gas.

What is the Electronegativity of Dubnium?

Dubnium's Electronegativty is . Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Dubnium?

Dubnium has a Heat of Vaporization of kJ/mol.

Uses

It has no significant commercial applications.

Sources

Made by bombarding californium-249 with a beam of nitrogen-15

105
Protons
105
Electrons
165
Neutrons

Db

Element Symbol
Db
Atomic Weight
270
Atomic Number
105
State
Unknown
Melting Point
Unknown
°C
Boiling Point
Unknown
°C
Heat of Vaporization
Unknown
kJ/mol
Crystal Structure
Unknown
Thermoconductivity
0.58
Unknown
W/cmK
Shells
2,8,18,32,32,11,2
Group
Transition Metal
Period
7
Block
D Block
Orbitals
[Rn] 5f14 6d3 7s2
Coefficient of Thermal Expansion
--
Covalent Radius
--
Density at 293K
--
Electrical Conductivity
--
First Ionization Potential
--
Second Ionization Potential
--
Third Ionization Potential
--
Ionic Radius
--
Oxydation States
--
Lattice Parameter
--
Lattice Parameter 2
--
Lattice Parameter 3
--
Pronounced

HA-ni-em

Discovered by

A. Ghiorso, et al

Discovery date

1970

Orbital configuration
2,8,18,32,32,11,2

Download the Periodic Table

Explore Other Transition Metals

186.207
75

Re

Rhenium
196.967
79

Au

Gold
44.956
21

Sc

Scandium
95.95
42

Mo

Molybdenum
269
106

Sg

Seaborgium
50.942
23

V

Vanadium
200.592
80

Hg

Mercury
54.938
25

Mn

Manganese
58.693
28

Ni

Nickel
51.996
24

Cr

Chromium
47.867
22

Ti

Titanium
270
107

Bh

Bohrium
270
108

Hs

Hassium
97
43

Tc

Technetium
101.07
44

Ru

Ruthenium
58.933
27

Co

Cobalt
92.906
41

Nb

Niobium
63.546
29

Cu

Copper
178.49
72

Hf

Hafnium
112.414
48

Cd

Cadmium
91.224
40

Zr

Zirconium
192.217
77

Ir

Iridium
106.42
46

Pd

Palladium
183.84
74

W

Tungsten
55.845
26

Fe

Iron
190.23
76

Os

Osmium
195.084
78

Pt

Platinum
88.906
39

Y

Yttrium
107.868
47

Ag

Silver
285
112

Cn

Copernicium
267
104

Rf

Rutherfordium
180.948
73

Ta

Tantalum
102.905
45

Rh

Rhodium
65.38
30

Zn

Zinc
Transition metal is any of various chemical elements that have valence electrons (electrons that can participate in the formation of chemical bond) in two shells instead of only one. They form group 3 (IIIb) through group 12 (IIb).
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