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Gadolinium vs Palladium

Gadolinium
Palladium
Palladium vs Gadolinium


Periodic Table
Symbol
Gd   
Pd   
Group Number
0   
18
10   
8
Period Number
6   
5   
Block
f block   
d block   
Element Family
Lanthanide   
Transition Metal   
CAS Number
7440542   
33
7440053   
99+
Space Group Name
P63/mmc   
Fm_ 3m   
Space Group Number
194.00   
5
225.00   
2
Facts
Interesting Facts
  • Gadolinium is not found free in nature, hence it is not a native metal.
  • Gadolinium metal found in minerals like Monazite and Bastnaesite.
  
  • 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 in Minerals, Mining   
Ores of metals   
History
  
  
Who Discovered
Jean Charles Galissard de Marignac   
William Hyde Wollaston   
Discovery
In 1880   
In 1803   
Abundance
  
  
Abundance In Universe
2 * 10-7 %   
22
2 * 10-7 %   
22
Abundance In Sun
~0.0000002 %   
25
~0.0000003 %   
24
Abundance In Meteorites
0.00 %   
34
0.00 %   
99+
Abundance In Earth's Crust
0.00 %   
30
0.00 %   
99+
Abundance In Oceans
0.00 %   
38
Not Available   
Uses
Uses & Benefits
  • Its alloys are also used in making Magnets, electronic components and Data storage devices.
  • Compound of Gadolinium metal are used in magnetic resonance imaging (MRI).
  
  • 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, 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
Non Toxic   
Toxic   
Present in Human Body
No   
No   
Physical Properties
Melting Point
1,311.00 °C   
35
1,554.90 °C   
22
Boiling Point
3,233.00 °C   
25
2,963.00 °C   
33
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Silver   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
4.75   
9
Brinell Hardness
Not Available   
320.00 MPa   
33
Vickers Hardness
510.00 MPa   
22
121.00 MPa   
36
Speed of Sound
2,680.00 m/s   
34
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
Gd   
Pd   
Isotopes
  
  
Known Isotopes
26   
13
38   
1
Electronegativity
  
  
Pauling Electronegativity
1.20   
39
2.20   
4
Allred Rochow Electronegativity
1.11   
29
1.35   
21
Allen Electronegativity
Not Available   
1.59   
22
Electropositivity
  
  
Pauling Electropositivity
2.80   
15
1.80   
99+
Ionization Energies
  
  
1st Energy Level
593.40 kJ/mol   
99+
520.23 kJ/mol   
99+
2nd Energy Level
1,170.00 kJ/mol   
99+
7,298.22 kJ/mol   
2
3rd Energy Level
1,990.00 kJ/mol   
99+
11,815.13 kJ/mol   
3
4th Energy Level
4,250.00 kJ/mol   
30
Not Available   
Electrochemical Equivalent
1.96 g/amp-hr   
32
1.99 g/amp-hr   
30
Electron Work Function
3.10 eV   
35
5.12 eV   
3
Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes   
Chemical Stability, Corrosion, Ionization, Solubility   
Atomic Properties
Atomic Number
64   
99+
46   
99+
Electron Configuration
[Xe] 4f7 5d1 6s2   
[Kr] 4d10   
Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Gadolinium.jpg#100   
FCC-Crystal-Structure-of-Palladium.jpg#100   
Atom
  
  
Number of Protons
64   
99+
46   
99+
Number of Neutrons
93   
37
60   
99+
Number of Electrons
64   
99+
46   
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
137.00 pm   
40
Covalent Radius
196.00 pm   
14
139.00 pm   
99+
Van der Waals Radius
237.00 pm   
15
163.00 pm   
40
Atomic Weight
47.87 amu   
99+
106.42 amu   
99+
Atomic Volume
19.90 cm3/mol   
20
8.90 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Europium
  
Rhodium
  
Next Element
Terbium
  
Silver
  
Valence Electron Potential
46.10 (-eV)   
34
33.00 (-eV)   
99+
Lattice Constant
363.60 pm   
32
389.07 pm   
25
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.59   
9
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
7.90 g/cm3   
99+
12.02 g/cm3   
29
Density When Liquid (at m.p.)
7.40 g/cm3   
31
10.38 g/cm3   
17
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
30
0.00 (Pa)   
27
Vapor Pressure at 2000 K
7.39 (Pa)   
9
0.00 (Pa)   
30
Elasticity properties
  
  
Shear Modulus
21.80 GPa   
33
44.00 GPa   
17
Bulk Modulus
37.90 GPa   
34
180.00 GPa   
9
Young's Modulus
54.80 GPa   
35
121.00 GPa   
16
Poisson Ratio
0.26   
23
0.39   
5
Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable, Weldable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.90   
40
12.02   
21
Magnetic Ordering
Ferromagnetic   
Diamagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
1.31 nΩ·m   
99+
105.40 nΩ·m   
29
Electrical Conductivity
0.01 106/cm Ω   
99+
0.10 106/cm Ω   
22
Electron Affinity
50.00 kJ/mol   
21
54.23 kJ/mol   
17
Thermal Properties
Specific Heat
0.23 J/(kg K)   
27
0.24 J/(kg K)   
23
Molar Heat Capacity
37.03 J/mol·K   
2
25.98 J/mol·K   
33
Thermal Conductivity
10.60 W/m·K   
99+
71.80 W/m·K   
23
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
9.40 µm/(m·K)   
99+
11.80 µm/(m·K)   
33
Enthalpy
  
  
Enthalpy of Vaporization
359.40 kJ/mol   
21
376.60 kJ/mol   
19
Enthalpy of Fusion
10.05 kJ/mol   
36
16.74 kJ/mol   
18
Enthalpy of Atomization
352.00 kJ/mol   
27
393.30 kJ/mol   
22
Standard Molar Entropy
68.10 J/mol.K   
16
37.60 J/mol.K   
40
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