Home
 Compare Metals

Samarium vs Dubnium

Samarium
Dubnium
Dubnium vs Samarium


Periodic Table
Symbol
Sm  
Db  
Group Number
Not Available  
5  
13
Period Number
6  
7  
Block
f block  
d block  
Element Family
Lanthanide  
Transition Metal  
CAS Number
7440199  
99+
53850354  
14
Space Group Name
R_ 3m  
Not Available  
Space Group Number
166.00  
6
Not Available  
Facts
Interesting Facts
  • Samarium metals helps stimulating body metabolism.
  • Samarium metals was 1st observed by Jean Charles Galissard de Marignac in Dydimia in 1853.
  
  • IUPAC allotted a temporary name to Dubnium metal as “ Unnilpentium”.
  • In the production of Dubnium, thermal gradient chromatography is used.
  
Sources
Found in Minerals, Mining, Ores of Minerals  
Produced by Bombarding Am243 with Ne22, Synthetically Produced  
History
  
  
Who Discovered
Lecoq de Boisbaudran  
Joint Institute for Nuclear Research  
Discovery
In 1879  
In 1968  
Abundance
  
  
Abundance In Universe
5 * 10-7 %  
19
Not Available  
Abundance In Sun
~0.0000001 %  
26
~-9999 %  
Abundance In Meteorites
0.00 %  
37
Not Available  
Abundance In Earth's Crust
0.00 %  
29
Not Available  
Abundance In Oceans
0.00 %  
40
Not Available  
Uses
Uses & Benefits
  • Magnets of Samarium cobalt alloy are stronger than that of Iron and hence, they are used in microwave application.
  • Samarium metal also used in optical lasers and infrared absorbing glasses and as a neutron absorber.
  
  • Currently known uses of Dubnium metal are limited to research purpose only.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
NA  
Medical Uses
NA  
NA  
Other Uses
Alloys, In Nuclear Reactors  
Research Purposes  
Biological Properties
  
  
Toxicity
Slightly Toxic  
Unknown  
Present in Human Body
Yes  
No  
In Blood
0.01 Blood/mg dm-3  
22
0.00 Blood/mg dm-3  
37
In Bone
Not Available  
0.00 p.p.m.  
36
Physical Properties
Melting Point
1,072.00 °C  
99+
Not Available  
Boiling Point
1,900.00 °C  
99+
Not Available  
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Unknown  
Luster
Lustrous  
Unknown Luster  
Hardness
  
  
Brinell Hardness
441.00 MPa  
27
Not Available  
Vickers Hardness
412.00 MPa  
24
Not Available  
Speed of Sound
2,130.00 m/s  
99+
Not Available  
Optical Properties
  
  
Allotropes
No  
No  
α Allotropes
Not Available  
Not Available  
β Allotropes
Not Available  
Not Available  
γ Allotropes
Not Available  
Not Available  
Chemical Properties
Chemical Formula
Sm  
Db  
Isotopes
  
  
Known Isotopes
30  
9
10  
28
Electronegativity
  
  
Pauling Electronegativity
1.17  
40
Not Available  
Allred Rochow Electronegativity
1.07  
32
Not Available  
Electropositivity
  
  
Pauling Electropositivity
2.83  
14
Not Available  
Ionization Energies
  
  
1st Energy Level
544.50 kJ/mol  
99+
664.80 kJ/mol  
38
2nd Energy Level
1,070.00 kJ/mol  
99+
1,546.70 kJ/mol  
38
3rd Energy Level
2,260.00 kJ/mol  
99+
2,378.40 kJ/mol  
99+
4th Energy Level
3,990.00 kJ/mol  
37
3,298.80 kJ/mol  
99+
5th Energy Level
Not Available  
4,305.20 kJ/mol  
39
Electrochemical Equivalent
1.87 g/amp-hr  
34
Not Available  
Electron Work Function
2.70 eV  
99+
Not Available  
Other Chemical Properties
Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic Properties
Atomic Number
62  
99+
105  
13
Electron Configuration
[Xe] 4f6 6s2  
[Rn] 5f14 6d3 7s2  
Crystal Structure
Rhombohedral (RHO)  
Body Centered Cubic (BCC)  
Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
62  
99+
105  
13
Number of Neutrons
88  
39
157  
7
Number of Electrons
62  
99+
105  
13
Radius of an Atom
  
  
Atomic Radius
180.00 pm  
14
139.00 pm  
39
Covalent Radius
198.00 pm  
13
149.00 pm  
35
Van der Waals Radius
229.00 pm  
20
Not Available  
Atomic Weight
150.36 amu  
99+
268.00 amu  
10
Atomic Volume
19.95 cm3/mol  
19
Not Available  
Adjacent Atomic Numbers
  
  
Previous Element
Promethium
  
Rutherfordium
  
Next Element
Europium
  
Seaborgium
  
Valence Electron Potential
44.80 (-eV)  
37
Not Available  
Lattice Constant
362.10 pm  
33
Not Available  
Lattice Angles
π/2, π/2, 2 π/3  
NA  
Lattice C/A Ratio
Not Available  
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
7.52 g/cm3  
99+
29.30 g/cm3  
5
Density When Liquid (at m.p.)
7.16 g/cm3  
32
Not Available  
Tensile Strength
Not Available  
Not Available  
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.94 (Pa)  
9
Not Available  
Elasticity properties
  
  
Shear Modulus
19.50 GPa  
34
Not Available  
Bulk Modulus
37.80 GPa  
35
Not Available  
Young's Modulus
49.70 GPa  
37
Not Available  
Poisson Ratio
0.27  
19
Not Available  
Other Mechanical Properties
NA  
Unknown  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.52  
99+
Not Available  
Magnetic Ordering
Paramagnetic  
Unknown  
Electrical Properties
  
  
Electrical Property
Conductor  
Unknown  
Resistivity
0.94 nΩ·m  
99+
Not Available  
Electrical Conductivity
0.01 106/cm Ω  
99+
Not Available  
Electron Affinity
50.00 kJ/mol  
21
Not Available  
Thermal Properties
Specific Heat
0.20 J/(kg K)  
31
Not Available  
Molar Heat Capacity
29.54 J/mol·K  
7
Not Available  
Thermal Conductivity
13.30 W/m·K  
99+
Not Available  
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
12.70 µm/(m·K)  
30
Not Available  
Enthalpy
  
  
Enthalpy of Vaporization
166.40 kJ/mol  
99+
Not Available  
Enthalpy of Fusion
8.62 kJ/mol  
40
Not Available  
Enthalpy of Atomization
209.00 kJ/mol  
99+
Not Available  
Standard Molar Entropy
69.60 J/mol.K  
15
Not Available  
Periodic Table >>
<< All

Compare Lanthanide Series

Lanthanide Metals

Lanthanide Metals

» More Lanthanide Metals

Compare Lanthanide Series

» More Compare Lanthanide Series
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!