Symbol
U
  
Pd
  
Period Number
7
  
5
  
Block
f block
  
d block
  
Element Family
Actinide
  
Transition Metal
  
Space Group Name
Cmcm
  
Fm_ 3m
  
Interesting Facts
- Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
- 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
Earth's crust, Mining, Ores of Minerals
  
Ores of metals
  
History
  
  
Who Discovered
Not Available
  
William Hyde Wollaston
  
Discovery
In 1789
  
In 1803
  
Abundance
  
  
Abundance In Sun
~0.0000001 %
  
26
~0.0000003 %
  
24
Abundance In Earth's Crust
Abundance In Oceans
Not Available
  
Uses & Benefits
- The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
-
Synthetic elements like transuranium are made from Uranium metal.
  
- 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
Ammunition Industry, Chemical Industry
  
Aerospace Industry, Automobile Industry, Electronic Industry
  
Medical Uses
NA
  
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing
  
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues
  
Coinage, Bullion, Jewellery
  
Biological Properties
  
  
Toxicity
Toxic
  
Toxic
  
Present in Human Body
No
  
No
  
Melting Point
1,132.00 °C
  
39
1,554.90 °C
  
22
Boiling Point
3,818.00 °C
  
16
2,963.00 °C
  
33
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Silvery Gray
  
Silver
  
Luster
Metallic
  
Metallic
  
Hardness
  
  
Brinell Hardness
2,350.00 MPa
  
2
Vickers Hardness
1,960.00 MPa
  
2
Speed of Sound
3,155.00 m/s
  
25
3,070.00 m/s
  
26
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
U
  
Pd
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Allred Rochow Electronegativity
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol
  
99+
520.23 kJ/mol
  
99+
2nd Energy Level
1,420.00 kJ/mol
  
99+
7,298.22 kJ/mol
  
2
3rd Energy Level
1,900.00 kJ/mol
  
99+
11,815.13 kJ/mol
  
3
4th Energy Level
3,145.00 kJ/mol
  
99+
Not Available
  
Electrochemical Equivalent
1.48 g/amp-hr
  
99+
1.99 g/amp-hr
  
30
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
  
Chemical Stability, Corrosion, Ionization, Solubility
  
Electron Configuration
[Rn] 5f3 6d1 7s2
  
[Kr] 4d10
  
Crystal Structure
Orthorhombic (ORTH)
  
Face Centered Cubic (FCC)
  
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100
  
FCC-Crystal-Structure-of-Palladium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
106.42 amu
  
99+
Atomic Volume
12.59 cm3/mol
  
40
8.90 cm3/mol
  
99+
Adjacent Atomic Numbers
  
  
Valence Electron Potential
170.00 (-eV)
  
4
33.00 (-eV)
  
99+
Lattice Angles
π/2, π/2, π/2
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
19.10 g/cm3
  
17
12.02 g/cm3
  
29
Density When Liquid (at m.p.)
10.38 g/cm3
  
17
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available
  
Elasticity properties
  
  
Other Mechanical Properties
Ductile, Malleable
  
Ductile, Malleable, Weldable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Paramagnetic
  
Diamagnetic
  
Electrical Properties
  
  
Electrical Property
Poor Conductor
  
Conductor
  
Resistivity
105.40 nΩ·m
  
29
Electrical Conductivity
0.04 106/cm Ω
  
37
0.10 106/cm Ω
  
22
Electron Affinity
Not Available
  
54.23 kJ/mol
  
17
Specific Heat
0.12 J/(kg K)
  
40
0.24 J/(kg K)
  
23
Molar Heat Capacity
27.67 J/mol·K
  
15
25.98 J/mol·K
  
33
Thermal Conductivity
27.50 W/m·K
  
40
71.80 W/m·K
  
23
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
13.90 µm/(m·K)
  
27
11.80 µm/(m·K)
  
33
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol
  
13
376.60 kJ/mol
  
19
Enthalpy of Fusion
15.48 kJ/mol
  
19
16.74 kJ/mol
  
18
Enthalpy of Atomization
489.50 kJ/mol
  
14
393.30 kJ/mol
  
22
Standard Molar Entropy
50.20 J/mol.K
  
31
37.60 J/mol.K
  
40