Dubnium - Db, 105
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    Actinium Ac 89
    Aluminium Al 13
    Americium Am 95
    Antinomy Sb 51
    Argon Ar 18
    Arsenic As 33
    Astatine At 85
    Barium Ba 56
    Berkelium Bk 97
    Beryllium Be 4
    Bismuth Bi 83
    Bohrium Bh 107
    Boron B 5
    Bromine Br 35
    Cadmium Cd 48
    Caesium Cs 55
    Calcium Ca 20
    Californium Cf 98
    Carbon C 6
    Cerium Ce 58
    Chlorine Cl 17
    Chromium Cr 24
    Cobalt Co 27
    Copper Cu 29
    Curium Cm 96
    Darmstadtium Ds 110
    Dubnium Db 105
    Dysprosium Dy 66
    Einsteinium Es 99
    Erbium Er 68
    Europium Eu 63
    Fermium Fm 100
    Fluorine F 9
    Francium Fr 87
    Gadolinium Gd 64
    Gallium Ga 31
    Germanium Ge 32
    Gold Au 79
    Hafnium Hf 72
    Hassium Hs 108
    Helium He 2
    Holmium Ho 67
    Hydrogen H 1
    Indium In 49
    Iodine I 53
    Iridium Ir 77
    Iron Fe 26
    Krypton Kr 36
    Lanthanum La 57
    Lawrencium Lr 103
    Lead Pb 82
    Lithium Li 3
    Lutetium Lu 71
    Magnesium Mg 12
    Manganese Mn 25
    Meitnerium Mt 109
    Mendelevium Md 101
    Mercury Hg 80
    Molybdenum Mo 42
    Neodymium Nd 60
    Neon Ne 10
    Neptunium Np 93
    Nickel Ni 28
    Niobium Nb 41
    Nitrogen N 7
    Nobelium No 102
    Osmium Os 76
    Oxygen O 8
    Palladium Pd 46
    Phosphorus P 15
    Platinum Pt 78
    Plutonium Pu 94
    Polonium Po 84
    Potassium K 19
    Praseodymium Pr 59
    Promethium Pm 61
    Protactinium Pa 91
    Radium Ra 88
    Radon Rn 86
    Rhenium Re 75
    Rhodium Rh 45
    Roentgenium Rg 111
    Rubidium Rb 37
    Ruthenium Ru 44
    Rutherfordium Rf 104
    Samarium Sm 62
    Scandium Sc 21
    Seaborgium Sg 106
    Selenium Se 34
    Silicon Si 14
    Silver Ag 47
    Sodium Na 11
    Strontium Sr 38
    Sulphur S 16
    Tantalum Ta 73
    Technetium Tc 43
    Tellurium Te 52
    Terbium Tb 65
    Thallium Tl 81
    Thorium Th 90
    Thulium Tm 69
    Tin Sn 50
    Titanium Ti 22
    Tungsten W 74
    Ununbium Uub 112
    Ununhexium Uuh 116
    Ununoctium Uuo 118
    Ununpentium Uup 115
    Ununquadium Uuq 114
    Ununseptium Uus 117
    Ununtrium Uut 113
    Uranium U 92
    Vanadium V 23
    Xenon Xe 54
    Ytterbium Yb 70
    Yttrium Y 39
    Zinc Zn 30
    Zirconium Zr 40
 
 
 

General information about Dubnium
Name:   Dubnium
Symbol:   Db
Number:   105
Element category:   Transition Metals
Group:   5
Period:   7
Block:   d
Appearance:   unknown, probably silvery
white or metallic gray
Standard atomic weight:   [268] g·mol-1
Electron configuration:   1s2 2s2p6 3s2p6d10 4s2p6d10f14

5s2p6d10f14 6s2p6d3 7s2
Electrons per shell:   2, 8, 18, 32, 32, 11, 2
   

Physical properties of Dubnium
Phase:   solid
Density:   ?
Melting point:   ?
Boiling point:   ?
Triple point:   ?
Critical point:   ?
Heat of fusion:   ?
Heat of vaporization:   ?
Specific heat capacity
(25 °C):		   ?
Electronegativity:   ?
   

Atomic structure of Dubnium
Atomic radius:   ?
Atomic volume:   ?
Covalent radius:   ?
Cross section sigmaa/barns:   ?
Crystal structure:   ?
Ionic radius:   ?
Filling orbital:   ?
Number of electrons:   107
Number of neutrons:   155
Number of protons:   107
Oxidation states:   8
Valence electrons:   ?
 
 
Electron dot
model

Other languages
 

DotModel
Latin: Dubnium
Czech: Dubnium
Croatian: Dubnij
French: Dubnium
German: Dubnium - s
Italian: Dubnium
Norwegian: Dubnium
Portuguese:  
Spanish: Dubnio
Swedish:  
   
   
   
   
Element
105 2
8
18
32
32 11 2

Db
Dubnium
(268)

Brief description
 

First synthisized by bombarding Am243 with Ne22. Only a small number of atoms of dubnium have ever been produced.

Uses of Dubnium
 


Hystory of Dubnium
 
  • Discoverer: Georgy Flerov
  • Discovery Location: Russia
  • Discovery Year: 1967
  • Name Origin: Joint Institute for Nuclear Research at Dubna in Russia.
   
   
 
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Periodic table of chemical elements

Group #
Period		 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18  
1 1
H		  
  Metals Alkali metals Alkaline earth metals Transition elements Other metals Actinides Lantha-
nides
  Non metals Halogens Other nonmetals Noble gases      
  Metalloids Metalloids          
  Unknown Unknown          
          2
He		 1
2 3
Li		 4
Be		 5
B		 6
C		 7
N		 8
O		 9
F		 10
Ne		 2
3 11
Na		 12
Mg		 13
Al		 14
Si		 15
P		 16
S		 17
Cl		 18
Ar		 3
4 19
K		 20
Ca		 21
Sc		 22
Ti		 23
V		 24
Cr		 25
Mn		 26
Fe		 27
Co		 28
Ni		 29
Cu		 30
Zn		 31
Ga		 32
Ge		 33
As		 34
Se		 35
Br		 36
Kr		 4
5 37
Rb		 38
Sr		 39
Y		 40
Zr		 41
Nb		 42
Mo		 43
Tc		 44
Ru		 45
Rh		 46
Pd		 47
Ag		 48
Cd		 49
In		 50
Sn		 51
Sb		 52
Te		 53
I		 54
Xe		 5
6 55
Cs		 56
Ba		 * 72
Hf		 73
Ta		 74
W		 75
Re		 76
Os		 77
Ir		 78
Pt		 79
Au		 80
Hg		 81
Tl		 82
Pb		 83
Bi		 84
Po		 85
At		 86
Rn		 6
7 87
Fr		 88
Ra		 ** 104
Rf		 105
Db		 106
Sg		 107
Bh		 108
Hs		 109
Mt		 110
Ds		 111
Rg		 112
Uub		 113
Uut		 114
Uuq		 115
Uup		 116
Uuh		 117
(Uus)		 118
Uuo		 7
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18  
                                       
* Lanthanides 57
La		 58
Ce		 59
Pr		 60
Nd		 61
Pm		 62
Sm		 63
Eu		 64
Gd		 65
Tb		 66
Dy		 67
Ho		 68
Er		 69
Tm		 70
Yb		 71
Lu		    
** Actinides 89
Ac		 90
Th		 91
Pa		 92
U		 93
Np		 94
Pu		 95
Am		 96
Cm		 97
Bk		 98
Cf		 99
Es		 100
Fm		 101
Md		 102
No		 103
Lr		    
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