Home
Compare Metals


Osmium vs Palladium


Palladium vs Osmium


Periodic Table

Symbol
Os   
Pd   

Group Number
8   
10
10   
8

Period Number
6   
5   

Block
d block   
d block   

Element Family
Transition Metal   
Transition Metal   

CAS Number
7440042   
99+
7440053   
99+

Space Group Name
P63/mmc   
Fm_ 3m   

Space Group Number
194.00   
5
225.00   
2

Facts

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.
  
  • Palladium alloys are used for Jewelry contains (95% Palladium and 5% Ruthenium)
  • In the late 1800s, Palladium metal used have more economical value than the Platinum metal.
  • Palladium element is known as a good catalyst
  

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

History
  
  

Who Discovered
Smithson Tennant   
William Hyde Wollaston   

Discovery
In 1803   
In 1803   

Abundance
  
  

Abundance In Universe
3 * 10-7 %   
21
2 * 10-7 %   
22

Abundance In Sun
~0.0000002 %   
25
~0.0000003 %   
24

Abundance In Meteorites
0.00 %   
28
0.00 %   
99+

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

Uses

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.
  
  • Mostly palladium metal is used in catalytic converters. In electronic industry it is used in ceramic capacitors of mobile and computer.
  • It is used in jewellery and dental fillings and crowns.
  

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

Medical Uses
NA   
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   

Other Uses
Alloys   
Coinage, Bullion, Jewellery   

Biological Properties
  
  

Toxicity
Highly Toxic   
Toxic   

Present in Human Body
No   
No   

Physical Properties

Melting Point
3,045.00 °C   
3
1,554.90 °C   
22

Boiling Point
5,027.00 °C   
6
2,963.00 °C   
33

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery Bluish-Gray   
Silver   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
7.00   
3
4.75   
9

Brinell Hardness
3,490.00 MPa   
1
320.00 MPa   
33

Vickers Hardness
Not Available   
121.00 MPa   
36

Speed of Sound
4,940.00 m/s   
11
3,070.00 m/s   
26

Optical Properties
  
  

Refractive Index
Not Available   
1.72   
1

Reflectivity
Not Available   
84.00 %   
4

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
Os   
Pd   

Isotopes
  
  

Known Isotopes
35   
4
38   
1

Electronegativity
  
  

Pauling Electronegativity
2.20   
4
2.20   
4

Allred Rochow Electronegativity
1.52   
12
1.35   
21

Allen Electronegativity
1.65   
19
1.59   
22

Electropositivity
  
  

Pauling Electropositivity
1.80   
99+
1.80   
99+

Ionization Energies
  
  

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

2nd Energy Level
1,309.80 kJ/mol   
99+
7,298.22 kJ/mol   
2

3rd Energy Level
1,600.00 kJ/mol   
99+
11,815.13 kJ/mol   
3

Electrochemical Equivalent
1.77 g/amp-hr   
38
1.99 g/amp-hr   
30

Electron Work Function
4.83 eV   
8
5.12 eV   
3

Other Chemical Properties
Chemical Stability, Ionization, Solubility   
Chemical Stability, Corrosion, Ionization, Solubility   

Atomic Properties

Atomic Number
76   
40
46   
99+

Electron Configuration
[Xe] 4f14 5d6 6s2   
[Kr] 4d10   

Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Palladium.jpg#100   

Atom
  
  

Number of Protons
76   
39
46   
99+

Number of Neutrons
114   
25
60   
99+

Number of Electrons
76   
39
46   
99+

Radius of an Atom
  
  

Atomic Radius
133.80 pm   
99+
137.00 pm   
40

Covalent Radius
Not Available   
139.00 pm   
99+

Van der Waals Radius
216.00 pm   
24
163.00 pm   
40

Atomic Weight
190.23 amu   
35
106.42 amu   
99+

Atomic Volume
8.49 cm3/mol   
99+
8.90 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Rhenium
  
Rhodium
  

Next Element
Iridium
  
Silver
  

Valence Electron Potential
91.40 (-eV)   
12
33.00 (-eV)   
99+

Lattice Constant
273.44 pm   
99+
389.07 pm   
25

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

Lattice C/A Ratio
1.58   
14
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
22.59 g/cm3   
9
12.02 g/cm3   
29

Density When Liquid (at m.p.)
20.00 g/cm3   
1
10.38 g/cm3   
17

Tensile Strength
1,000.00 MPa   
4
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
27

Vapor Pressure at 2000 K
0.00 (Pa)   
28
0.00 (Pa)   
30

Elasticity properties
  
  

Shear Modulus
222.00 GPa   
1
44.00 GPa   
17

Bulk Modulus
462.00 GPa   
1
180.00 GPa   
9

Young's Modulus
Not Available   
121.00 GPa   
16

Poisson Ratio
0.25   
24
0.39   
5

Other Mechanical Properties
Ductile   
Ductile, Malleable, Weldable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
22.57   
2
12.02   
21

Magnetic Ordering
Paramagnetic   
Diamagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
81.20 nΩ·m   
35
105.40 nΩ·m   
29

Electrical Conductivity
0.11 106/cm Ω   
18
0.10 106/cm Ω   
22

Electron Affinity
106.10 kJ/mol   
9
54.23 kJ/mol   
17

Thermal Properties

Specific Heat
0.13 J/(kg K)   
39
0.24 J/(kg K)   
23

Molar Heat Capacity
24.70 J/mol·K   
99+
25.98 J/mol·K   
33

Thermal Conductivity
87.60 W/m·K   
19
71.80 W/m·K   
23

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
5.10 µm/(m·K)   
99+
11.80 µm/(m·K)   
33

Enthalpy
  
  

Enthalpy of Vaporization
627.60 kJ/mol   
7
376.60 kJ/mol   
19

Enthalpy of Fusion
29.30 kJ/mol   
4
16.74 kJ/mol   
18

Enthalpy of Atomization
669.00 kJ/mol   
6
393.30 kJ/mol   
22

Standard Molar Entropy
32.60 J/mol.K   
99+
37.60 J/mol.K   
40

Periodic Table >>
<< All

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

» More Compare Transition Metals