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What is Osmium?
Osmium


Periodic Table
0
Symbol
Os 0
Group Number
8 10
Period Number
6 2
Block
d block 0
Element Family
Transition Metal 0
CAS Number
7440042 75
Space Group Name
P63/mmc 0
Space Group Number
194.00 5
Facts
0
Interesting Facts
  • Osmium metal does not oxidize in air unless it is heated.
  • But if it heated den it forms Osmium Tetroxide, which is highly toxic.
0
Sources
Found As a By-product, Found in Minerals, Mining 0
History
0
Who Discovered
Smithson Tennant 0
Discovery
In 1803 0
Abundance
0
Abundance In Universe
3 * 10-7 % 21
Abundance In Sun
~0.0000002 % 25
Abundance In Meteorites
0.00 % 28
Abundance In Earth's Crust
0.00 % 53
Abundance In Oceans
Not Available 0
Abundance In Humans
Not Available 0
Uses
0
Uses & Benefits
  • Its has very limited uses and its alloys are very hard and are used in the manufacturing of pen tips, pivots, needles and electrical contacts.
  • It is also used as industrial catalyst to speed up the chemical reaction.
0
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry 0
Medical Uses
NA 0
Other Uses
Alloys 0
Biological Properties
0
Toxicity
Highly Toxic 0
Present in Human Body
No 0
In Blood
Not Available 0
In Bone
Not Available 0
Physical
0
Melting Point
3,045.00 °C 3
Boiling Point
5,027.00 °C 6
Appearance
0
Physical State
Solid 0
Color
Silvery Bluish-Gray 0
Luster
Metallic 0
Hardness
0
Mohs Hardness
7.00 3
Brinell Hardness
3,490.00 MPa 1
Vickers Hardness
Not Available 0
Speed of Sound
4,940.00 m/s 11
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Allotropes
No 0
α Allotropes
Not Available 0
β Allotropes
Not Available 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Os 0
Isotopes
0
Known Isotopes
35 4
Electronegativity
0
Pauling Electronegativity
2.20 4
Sanderson Electronegativity
Not Available 0
Allred Rochow Electronegativity
1.52 12
Mulliken-Jaffe Electronegativity
Not Available 0
Allen Electronegativity
1.65 19
Electropositivity
0
Pauling Electropositivity
1.80 49
Ionization Energies
0
1st Energy Level
840.00 kJ/mol 12
2nd Energy Level
1,309.80 kJ/mol 53
3rd Energy Level
1,600.00 kJ/mol 82
4th Energy Level
Not Available 0
5th Energy Level
Not Available 0
6th Energy Level
Not Available 0
7th Energy level
Not Available 0
8th Energy Level
Not Available 0
9th Energy Level
Not Available 0
10th Energy Level
Not Available 0
11th Energy Level
Not Available 0
12th Energy Level
Not Available 0
13th Energy Level
Not Available 0
14th Energy Level
Not Available 0
15th Energy Level
Not Available 0
16th Energy Level
Not Available 0
17th Energy Level
Not Available 0
18th Energy Level
Not Available 0
19th Energy Level
Not Available 0
20th Energy Level
Not Available 0
21st Energy Level
Not Available 0
22nd Energy Level
Not Available 0
23rd Energy Level
Not Available 0
24th Energy Level
Not Available 0
25th Energy Level
Not Available 0
26th Energy Level
Not Available 0
27th Energy Level
Not Available 0
28th Energy Level
Not Available 0
29th Energy Level
Not Available 0
30th Energy Level
Not Available 0
Electrochemical Equivalent
1.77 g/amp-hr 38
Electron Work Function
4.83 eV 8
Other Chemical Properties
Chemical Stability, Ionization, Solubility 0
Atomic
0
Atomic Number
76 40
Electron Configuration
[Xe] 4f14 5d6 6s2 0
Crystal Structure
Hexagonal Close Packed (HCP) 0
Crystal Lattice
BCC-Crystal-Structure-.jpg#100 0
Atom
0
Number of Protons
76 39
Number of Neutrons
114 25
Number of Electrons
76 39
Radius of an Atom
0
Atomic Radius
133.80 pm 44
Covalent Radius
Not Available 0
Van der Waals Radius
216.00 pm 24
Atomic Weight
190.23 amu 35
Atomic Volume
8.49 cm3/mol 58
Adjacent Atomic Numbers
0
Previous Element
64 0
Next Element
33 0
Valence Electron Potential
91.40 (-eV) 12
Lattice Constant
273.44 pm 66
Lattice Angles
π/2, π/2, 2 π/3 0
Lattice C/A Ratio
1.58 14
Mechanical
0
Density
0
Density At Room Temperature
22.59 g/cm3 9
Density When Liquid (at m.p.)
20.00 g/cm3 1
Tensile Strength
1,000.00 MPa 4
Viscosity
Not Available 0
Vapor Pressure
0
Vapor Pressure at 1000 K
Not Available 0
Vapor Pressure at 2000 K
0.00 (Pa) 28
Elasticity properties
0
Shear Modulus
222.00 GPa 1
Bulk Modulus
462.00 GPa 1
Young's Modulus
Not Available 0
Poisson Ratio
0.25 24
Other Mechanical Properties
Ductile 0
Magnetic
0
Magnetic Characteristics
0
Specific Gravity
22.57 2
Magnetic Ordering
Paramagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Electrical Properties
0
Electrical Property
Conductor 0
Resistivity
81.20 nΩ·m 35
Electrical Conductivity
0.11 106/cm Ω 18
Electron Affinity
106.10 kJ/mol 9
Thermal
0
Specific Heat
0.13 J/(kg K) 39
Molar Heat Capacity
24.70 J/mol·K 49
Thermal Conductivity
87.60 W/m·K 19
Critical Temperature
Not Available 0
Thermal Expansion
5.10 µm/(m·K) 56
Enthalpy
0
Enthalpy of Vaporization
627.60 kJ/mol 7
Enthalpy of Fusion
29.30 kJ/mol 4
Enthalpy of Atomization
669.00 kJ/mol 6
Standard Molar Entropy
32.60 J/mol.K 47
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