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Terbium vs Palladium


Palladium vs Terbium


Periodic Table

Symbol
Tb   
Pd   

Group Number
Not Available   
10   
8

Period Number
6   
5   

Block
f block   
d block   

Element Family
Lanthanide   
Transition Metal   

CAS Number
7440279   
99+
7440053   
99+

Space Group Name
P63/mmc   
Fm_ 3m   

Space Group Number
194.00   
5
225.00   
2

Facts

Interesting Facts
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
  
  • 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, Found with Other Rare Earth Metals, Mining, Ores of Minerals   
Ores of metals   

History
  
  

Who Discovered
Carl Gustaf Mosander   
William Hyde Wollaston   

Discovery
In 1842   
In 1803   

Abundance
  
  

Abundance In Universe
5 * 10-8 %   
27
2 * 10-7 %   
22

Abundance In Sun
~0.00000001 %   
29
~0.0000003 %   
24

Abundance In Meteorites
0.00 %   
99+
0.00 %   
99+

Abundance In Earth's Crust
0.00 %   
40
0.00 %   
99+

Abundance In Oceans
0.00 %   
99+
Not Available   

Uses

Uses & Benefits
  • Terbium salts are used in optical devices like laser devices.
  • Terbium’s alloy lengthens and shortens the magnetic field and this effect forms loudspeaker.
  
  • 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
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
Low Toxic   
Toxic   

Present in Human Body
No   
No   

Physical Properties

Melting Point
1,356.00 °C   
33
1,554.90 °C   
22

Boiling Point
3,123.00 °C   
29
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
677.00 MPa   
17
320.00 MPa   
33

Vickers Hardness
863.00 MPa   
13
121.00 MPa   
36

Speed of Sound
2,620.00 m/s   
35
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
Tb   
Pd   

Isotopes
  
  

Known Isotopes
26   
13
38   
1

Electronegativity
  
  

Pauling Electronegativity
Not Available   
2.20   
4

Allred Rochow Electronegativity
1.10   
30
1.35   
21

Allen Electronegativity
Not Available   
1.59   
22

Electropositivity
  
  

Pauling Electropositivity
Not Available   
1.80   
99+

Ionization Energies
  
  

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

2nd Energy Level
1,174.80 kJ/mol   
99+
7,298.22 kJ/mol   
2

3rd Energy Level
2,417.00 kJ/mol   
99+
11,815.13 kJ/mol   
3

4th Energy Level
4,203.00 kJ/mol   
31
Not Available   

Electrochemical Equivalent
1.98 g/amp-hr   
31
1.99 g/amp-hr   
30

Electron Work Function
3.00 eV   
36
5.12 eV   
3

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

Atomic Properties

Atomic Number
65   
99+
46   
99+

Electron Configuration
[Xe] 4f9 6s2   
[Kr] 4d10   

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

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

Atom
  
  

Number of Protons
65   
99+
46   
99+

Number of Neutrons
94   
36
60   
99+

Number of Electrons
65   
99+
46   
99+

Radius of an Atom
  
  

Atomic Radius
177.00 pm   
17
137.00 pm   
40

Covalent Radius
194.00 pm   
16
139.00 pm   
99+

Van der Waals Radius
221.00 pm   
22
163.00 pm   
40

Atomic Weight
158.93 amu   
99+
106.42 amu   
99+

Atomic Volume
19.20 cm3/mol   
22
8.90 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Gadolinium
  
Rhodium
  

Next Element
Dysprosium
  
Silver
  

Valence Electron Potential
46.80 (-eV)   
33
33.00 (-eV)   
99+

Lattice Constant
360.10 pm   
36
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   
13
Not Available   

Mechanical Properties

Density
  
  

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

Density When Liquid (at m.p.)
7.65 g/cm3   
30
10.38 g/cm3   
17

Tensile Strength
60.00 MPa   
17
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
29
0.00 (Pa)   
27

Vapor Pressure at 2000 K
12.50 (Pa)   
8
0.00 (Pa)   
30

Elasticity properties
  
  

Shear Modulus
22.10 GPa   
32
44.00 GPa   
17

Bulk Modulus
38.70 GPa   
33
180.00 GPa   
9

Young's Modulus
55.70 GPa   
34
121.00 GPa   
16

Poisson Ratio
0.26   
21
0.39   
5

Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable, Weldable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
8.23   
39
12.02   
21

Magnetic Ordering
Paramagnetic   
Diamagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
1.15 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
0.18 J/(kg K)   
33
0.24 J/(kg K)   
23

Molar Heat Capacity
28.91 J/mol·K   
9
25.98 J/mol·K   
33

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

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
10.30 µm/(m·K)   
38
11.80 µm/(m·K)   
33

Enthalpy
  
  

Enthalpy of Vaporization
330.90 kJ/mol   
26
376.60 kJ/mol   
19

Enthalpy of Fusion
10.80 kJ/mol   
34
16.74 kJ/mol   
18

Enthalpy of Atomization
314.00 kJ/mol   
33
393.30 kJ/mol   
22

Standard Molar Entropy
73.20 J/mol.K   
10
37.60 J/mol.K   
40

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