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Palladium vs Gadolinium


Gadolinium vs Palladium


Periodic Table

Symbol
Pd   
Gd   

Group Number
10   
8
0   
18

Period Number
5   
6   

Block
d block   
f block   

Element Family
Transition Metal   
Lanthanide   

CAS Number
7440053   
99+
7440542   
33

Space Group Name
Fm_ 3m   
P63/mmc   

Space Group Number
225.00   
2
194.00   
5

Facts

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
  
  • Gadolinium is not found free in nature, hence it is not a native metal.
  • Gadolinium metal found in minerals like Monazite and Bastnaesite.
  

Sources
Ores of metals   
Found in Minerals, Mining   

History
  
  

Who Discovered
William Hyde Wollaston   
Jean Charles Galissard de Marignac   

Discovery
In 1803   
In 1880   

Abundance
  
  

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

Abundance In Sun
~0.0000003 %   
24
~0.0000002 %   
25

Abundance In Meteorites
0.00 %   
99+
0.00 %   
34

Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
30

Abundance In Oceans
Not Available   
0.00 %   
38

Uses

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.
  
  • 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).
  

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

Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
NA   

Other Uses
Coinage, Bullion, Jewellery   
Alloys   

Biological Properties
  
  

Toxicity
Toxic   
Non Toxic   

Present in Human Body
No   
No   

Physical Properties

Melting Point
1,554.90 °C   
22
1,311.00 °C   
35

Boiling Point
2,963.00 °C   
33
3,233.00 °C   
25

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Silvery White   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
4.75   
9
Not Available   

Brinell Hardness
320.00 MPa   
33
Not Available   

Vickers Hardness
121.00 MPa   
36
510.00 MPa   
22

Speed of Sound
3,070.00 m/s   
26
2,680.00 m/s   
34

Optical Properties
  
  

Refractive Index
1.72   
1
Not Available   

Reflectivity
84.00 %   
4
Not Available   

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
Pd   
Gd   

Isotopes
  
  

Known Isotopes
38   
1
26   
13

Electronegativity
  
  

Pauling Electronegativity
2.20   
4
1.20   
39

Allred Rochow Electronegativity
1.35   
21
1.11   
29

Allen Electronegativity
1.59   
22
Not Available   

Electropositivity
  
  

Pauling Electropositivity
1.80   
99+
2.80   
15

Ionization Energies
  
  

1st Energy Level
520.23 kJ/mol   
99+
593.40 kJ/mol   
99+

2nd Energy Level
7,298.22 kJ/mol   
2
1,170.00 kJ/mol   
99+

3rd Energy Level
11,815.13 kJ/mol   
3
1,990.00 kJ/mol   
99+

4th Energy Level
Not Available   
4,250.00 kJ/mol   
30

Electrochemical Equivalent
1.99 g/amp-hr   
30
1.96 g/amp-hr   
32

Electron Work Function
5.12 eV   
3
3.10 eV   
35

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

Atomic Properties

Atomic Number
46   
99+
64   
99+

Electron Configuration
[Kr] 4d10   
[Xe] 4f7 5d1 6s2   

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

Crystal Lattice
FCC-Crystal-Structure-of-Palladium.jpg#100   
HCP-Crystal-Structure-of-Gadolinium.jpg#100   

Atom
  
  

Number of Protons
46   
99+
64   
99+

Number of Neutrons
60   
99+
93   
37

Number of Electrons
46   
99+
64   
99+

Radius of an Atom
  
  

Atomic Radius
137.00 pm   
40
180.00 pm   
14

Covalent Radius
139.00 pm   
99+
196.00 pm   
14

Van der Waals Radius
163.00 pm   
40
237.00 pm   
15

Atomic Weight
106.42 amu   
99+
47.87 amu   
99+

Atomic Volume
8.90 cm3/mol   
99+
19.90 cm3/mol   
20

Adjacent Atomic Numbers
  
  

Previous Element
Rhodium
  
Europium
  

Next Element
Silver
  
Terbium
  

Valence Electron Potential
33.00 (-eV)   
99+
46.10 (-eV)   
34

Lattice Constant
389.07 pm   
25
363.60 pm   
32

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

Lattice C/A Ratio
Not Available   
1.59   
9

Mechanical Properties

Density
  
  

Density At Room Temperature
12.02 g/cm3   
29
7.90 g/cm3   
99+

Density When Liquid (at m.p.)
10.38 g/cm3   
17
7.40 g/cm3   
31

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
27
0.00 (Pa)   
30

Vapor Pressure at 2000 K
0.00 (Pa)   
30
7.39 (Pa)   
9

Elasticity properties
  
  

Shear Modulus
44.00 GPa   
17
21.80 GPa   
33

Bulk Modulus
180.00 GPa   
9
37.90 GPa   
34

Young's Modulus
121.00 GPa   
16
54.80 GPa   
35

Poisson Ratio
0.39   
5
0.26   
23

Other Mechanical Properties
Ductile, Malleable, Weldable   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
12.02   
21
7.90   
40

Magnetic Ordering
Diamagnetic   
Ferromagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
105.40 nΩ·m   
29
1.31 nΩ·m   
99+

Electrical Conductivity
0.10 106/cm Ω   
22
0.01 106/cm Ω   
99+

Electron Affinity
54.23 kJ/mol   
17
50.00 kJ/mol   
21

Thermal Properties

Specific Heat
0.24 J/(kg K)   
23
0.23 J/(kg K)   
27

Molar Heat Capacity
25.98 J/mol·K   
33
37.03 J/mol·K   
2

Thermal Conductivity
71.80 W/m·K   
23
10.60 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

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

Enthalpy
  
  

Enthalpy of Vaporization
376.60 kJ/mol   
19
359.40 kJ/mol   
21

Enthalpy of Fusion
16.74 kJ/mol   
18
10.05 kJ/mol   
36

Enthalpy of Atomization
393.30 kJ/mol   
22
352.00 kJ/mol   
27

Standard Molar Entropy
37.60 J/mol.K   
40
68.10 J/mol.K   
16

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