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Lutetium Osmium Comparison


Osmium Lutetium comparison


Periodic Table

Symbol
Lu   
Os   

Group Number
Not Available   
8   
10

Period Number
6   
6   

Block
f block   
d block   

Element Family
Lanthanide   
Transition Metal   

CAS Number
7439943   
99+
7440042   
99+

Space Group Name
P63/mmc   
P63/mmc   

Space Group Number
194.00   
5
194.00   
5

Facts

Interesting Facts
  • Metal dust of Lutetium element is highly explosive.
  • Lutetium metal is corrosion resistance and acts stable in air.
  
  • Osmium metal does not oxidize in air unless it is heated.
  • But if it heated den it forms Osmium Tetroxide, which is highly toxic.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Found As a By-product, Found in Minerals, Mining   

History
  
  

Who Discovered
Georges Urbain and Carl Auer von Welsbach   
Smithson Tennant   

Discovery
In 1906   
In 1803   

Abundance
  
  

Abundance In Universe
1 * 10-8 %   
30
3 * 10-7 %   
21

Abundance In Sun
~0.0000001 %   
26
~0.0000002 %   
25

Abundance In Meteorites
0.00 %   
99+
0.00 %   
28

Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
99+

Abundance In Oceans
0.00 %   
99+
Not Available   

Uses

Uses & Benefits
  • Lutetium metal is used outside research. It has commercial uses like Industrial catalyst for cracking oil refineries of hydrocarbons .
  
  • 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.
  

Industrial Uses
NA   
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
Low Toxic   
Highly Toxic   

Present in Human Body
No   
No   

Physical Properties

Melting Point
1,652.00 °C   
19
3,045.00 °C   
3

Boiling Point
3,402.00 °C   
19
5,027.00 °C   
6

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery Bluish-Gray   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
7.00   
3

Brinell Hardness
893.00 MPa   
10
3,490.00 MPa   
1

Vickers Hardness
1,160.00 MPa   
8
Not Available   

Speed of Sound
Not Available   
4,940.00 m/s   
11

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
Lu   
Os   

Isotopes
  
  

Known Isotopes
35   
4
35   
4

Electronegativity
  
  

Pauling Electronegativity
1.27   
34
2.20   
4

Allred Rochow Electronegativity
1.14   
28
1.52   
12

Allen Electronegativity
Not Available   
1.65   
19

Electropositivity
  
  

Pauling Electropositivity
2.73   
20
1.80   
99+

Ionization Energies
  
  

1st Energy Level
523.50 kJ/mol   
99+
840.00 kJ/mol   
12

2nd Energy Level
1,340.00 kJ/mol   
99+
1,309.80 kJ/mol   
99+

3rd Energy Level
2,022.30 kJ/mol   
99+
1,600.00 kJ/mol   
99+

4th Energy Level
4,370.00 kJ/mol   
28
Not Available   

5th Energy Level
6,445.00 kJ/mol   
21
Not Available   

Electrochemical Equivalent
2.18 g/amp-hr   
23
1.77 g/amp-hr   
38

Electron Work Function
3.30 eV   
33
4.83 eV   
8

Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Chemical Stability, Ionization, Solubility   

Atomic Properties

Atomic Number
71   
99+
76   
40

Electron Configuration
[Xe] 6s2 4f14 5d1   
[Xe] 4f14 5d6 6s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
71   
99+
76   
39

Number of Neutrons
104   
30
114   
25

Number of Electrons
71   
99+
76   
39

Radius of an Atom
  
  

Atomic Radius
174.00 pm   
20
133.80 pm   
99+

Covalent Radius
187.00 pm   
20
Not Available   

Van der Waals Radius
221.00 pm   
22
216.00 pm   
24

Atomic Weight
174.97 amu   
40
190.23 amu   
35

Atomic Volume
17.78 cm3/mol   
30
8.49 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Ytterbium
  
Rhenium
  

Next Element
Hafnium
  
Iridium
  

Valence Electron Potential
50.90 (-eV)   
26
91.40 (-eV)   
12

Lattice Constant
350.31 pm   
99+
273.44 pm   
99+

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
1.59   
10
1.58   
14

Mechanical Properties

Density
  
  

Density At Room Temperature
9.84 g/cm3   
38
22.59 g/cm3   
9

Density When Liquid (at m.p.)
9.30 g/cm3   
22
20.00 g/cm3   
1

Tensile Strength
Not Available   
1,000.00 MPa   
4

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
33
Not Available   

Vapor Pressure at 2000 K
3.18 (Pa)   
11
0.00 (Pa)   
28

Elasticity properties
  
  

Shear Modulus
27.20 GPa   
26
222.00 GPa   
1

Bulk Modulus
47.60 GPa   
23
462.00 GPa   
1

Young's Modulus
68.60 GPa   
30
Not Available   

Poisson Ratio
0.26   
21
0.25   
24

Other Mechanical Properties
NA   
Ductile   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
9.84   
29
22.57   
2

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
582.00 nΩ·m   
9
81.20 nΩ·m   
35

Electrical Conductivity
0.02 106/cm Ω   
99+
0.11 106/cm Ω   
18

Electron Affinity
50.00 kJ/mol   
21
106.10 kJ/mol   
9

Thermal Properties

Specific Heat
0.15 J/(kg K)   
36
0.13 J/(kg K)   
39

Molar Heat Capacity
26.86 J/mol·K   
24
24.70 J/mol·K   
99+

Thermal Conductivity
16.40 W/m·K   
99+
87.60 W/m·K   
19

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
9.90 µm/(m·K)   
40
5.10 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
355.90 kJ/mol   
22
627.60 kJ/mol   
7

Enthalpy of Fusion
18.70 kJ/mol   
13
29.30 kJ/mol   
4

Enthalpy of Atomization
398.00 kJ/mol   
20
669.00 kJ/mol   
6

Standard Molar Entropy
51.00 J/mol.K   
30
32.60 J/mol.K   
99+

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