Symbol
Pd
  
Pu
  
Period Number
5
  
7
  
Block
d block
  
f block
  
Element Family
Transition Metal
  
Actinide
  
Space Group Name
Fm_ 3m
  
P121/m1
  
Interesting Facts
- 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
  
- Plutonium metal if obtain from ores of uranium metal.
- Plutonium metal is very sensitive to the change in atmospheric conditions like temperature and pressure.
  
Sources
Ores of metals
  
Mining, Ores of metals
  
History
  
  
Who Discovered
William Hyde Wollaston
  
Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan
  
Discovery
In 1803
  
In Between 1940 1941
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~0.0000003 %
  
24
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Uses & Benefits
- 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.
  
- Plutonium was used in atomic bombs and still it is being used in various weapons and Ammunition industry.
-
It is also used in nuclear power plant as source of energy for space missions.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Electronic Industry
  
Aerospace Industry, Ammunition Industry
  
Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing
  
NA
  
Other Uses
Coinage, Bullion, Jewellery
  
Alloys
  
Biological Properties
  
  
Toxicity
Toxic
  
Toxic
  
Present in Human Body
No
  
No
  
In Blood
Not Available
  
0.00 Blood/mg dm-3
  
37
In Bone
Not Available
  
0.00 p.p.m.
  
36
Melting Point
1,554.90 °C
  
22
Boiling Point
2,963.00 °C
  
33
3,235.00 °C
  
24
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silver
  
Silvery White
  
Luster
Metallic
  
NA
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Vickers Hardness
Not Available
  
Speed of Sound
3,070.00 m/s
  
26
2,260.00 m/s
  
99+
Optical Properties
  
  
Refractive Index
Not Available
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Pd
  
Pu
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Allred Rochow Electronegativity
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
520.23 kJ/mol
  
99+
584.70 kJ/mol
  
99+
2nd Energy Level
7,298.22 kJ/mol
  
2
1,128.00 kJ/mol
  
99+
3rd Energy Level
11,815.13 kJ/mol
  
3
2,084.00 kJ/mol
  
99+
4th Energy Level
Not Available
  
3,338.00 kJ/mol
  
99+
Electrochemical Equivalent
1.99 g/amp-hr
  
30
2.28 g/amp-hr
  
22
Electron Work Function
Not Available
  
Other Chemical Properties
Chemical Stability, Corrosion, Ionization, Solubility
  
Corrosion, Ionization, Radioactive Isotopes, Radioactivity
  
Electron Configuration
[Kr] 4d10
  
[Rn] 5f6 7s2
  
Crystal Structure
Face Centered Cubic (FCC)
  
Monoclinic (MON)
  
Crystal Lattice
FCC-Crystal-Structure-of-Palladium.jpg#100
  
MON-Crystal-Structure-of-Plutonium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
106.42 amu
  
99+
Atomic Volume
8.90 cm3/mol
  
99+
12.32 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Valence Electron Potential
33.00 (-eV)
  
99+
64.90 (-eV)
  
21
Lattice Angles
π/2, π/2, π/2
  
NA
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
12.02 g/cm3
  
29
19.82 g/cm3
  
13
Density When Liquid (at m.p.)
10.38 g/cm3
  
17
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Bulk Modulus
Not Available
  
Other Mechanical Properties
Ductile, Malleable, Weldable
  
Ductile, Malleable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Paramagnetic
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Poor Conductor
  
Resistivity
105.40 nΩ·m
  
29
Electrical Conductivity
0.10 106/cm Ω
  
22
0.01 106/cm Ω
  
99+
Electron Affinity
54.23 kJ/mol
  
17
Not Available
  
Specific Heat
0.24 J/(kg K)
  
23
0.13 J/(kg K)
  
39
Molar Heat Capacity
25.98 J/mol·K
  
33
35.50 J/mol·K
  
3
Thermal Conductivity
71.80 W/m·K
  
23
6.74 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
11.80 µm/(m·K)
  
33
46.70 µm/(m·K)
  
6
Enthalpy
  
  
Enthalpy of Vaporization
376.60 kJ/mol
  
19
344.00 kJ/mol
  
25
Enthalpy of Fusion
16.74 kJ/mol
  
18
2.82 kJ/mol
  
99+
Enthalpy of Atomization
393.30 kJ/mol
  
22
360.00 kJ/mol
  
26
Standard Molar Entropy
37.60 J/mol.K
  
40
Not Available