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Palladium vs Erbium


Erbium vs Palladium


Periodic Table

Symbol
Pd  
Er  

Group Number
10  
8
3  
15

Period Number
5  
6  

Block
d block  
f block  

Element Family
Transition Metal  
Lanthanide  

CAS Number
7440053  
99+
7440520  
35

Space Group Name
Fm_ 3m  
P63/mmc  

Space Group Number
225.00  
3
194.00  
7

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
  
  • Erbium metal is used as alloyed with Vanadium to make it softer.
  • Recent studies shows that it is helpful for metabolism.
  

Sources
Ores of metals  
Mining  

History
  
  

Who Discovered
William Hyde Wollaston  
Carl Gustaf Mosander  

Discovery
In 1803  
In 1842  

Abundance
  
  

Abundance In Universe
0.00 %  
23
0.00 %  
23

Abundance In Sun
0.00 %  
24
0.00 %  
26

Abundance In Meteorites
0.00 %  
99+
0.00 %  
36

Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
32

Abundance In Oceans
-  
0.00 %  
36

Abundance In Humans
0.00 %  
24
0.00 %  
24

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.
  
  • It has a tendency to get tarnished in the open air, but when alloyed with elements like erbium, vanadium, its hardness levels decreases.
  • Its compounds like Erbium oxide is used in safety glasses of welders and metal workers.
  

Industrial Uses
Aerospace Industry, Automobile Industry, Electronic Industry  
Chemical Industry  

Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing  
-  

Other Uses
Coinage, Bullion, Jewellery  
Alloys  

Biological Properties
  
  

Toxicity
Toxic  
Mildly Toxic  

Present in Human Body
No  
No  

In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
40

In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+

Physical

Melting Point
1,554.90 °C  
22
1,522.00 °C  
28

Boiling Point
2,963.00 °C  
34
2,510.00 °C  
99+

Appearance
  
  

Physical State
Solid  
Solid  

Color
Silver  
Silvery White  

Luster
Metallic  
Lustrous  

Hardness
  
  

Mohs Hardness
4.75  
9
1.00  
22

Brinell Hardness
320.00 MPa  
40
814.00 MPa  
12

Vickers Hardness
121.00 MPa  
99+
589.00 MPa  
30

Speed of Sound
3,070.00 m/s  
38
2,830.00 m/s  
99+

Optical Properties
  
  

Refractive Index
1.72  
25
1.76  
24

Reflectivity
84.00 %  
5
36.00 %  
33

Allotropes
No  
No  

α Allotropes
-  
-  

β Allotropes
-  
-  

γ Allotropes
-  
-  

Chemical

Chemical Formula
Pd  
Er  

Isotopes
  
  

Known Isotopes
38  
1
31  
8

Electronegativity
  
  

Pauling Electronegativity
2.20  
5
1.24  
37

Sanderson Electronegativity
2.20  
8
1.24  
29

Allred Rochow Electronegativity
1.35  
22
1.11  
30

Mulliken-Jaffe Electronegativity
2.20  
6
1.24  
36

Allen Electronegativity
1.59  
25
1.24  
99+

Electropositivity
  
  

Pauling Electropositivity
1.80  
99+
2.76  
18

Ionization Energies
  
  

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

2nd Energy Level
7,298.22 kJ/mol  
2
1,150.00 kJ/mol  
99+

3rd Energy Level
11,815.13 kJ/mol  
3
2,194.00 kJ/mol  
99+

4th Energy Level
870.00 kJ/mol  
99+
4,120.00 kJ/mol  
99+

5th Energy Level
8,044.00 kJ/mol  
13
5,897.00 kJ/mol  
99+

6th Energy Level
8,044.00 kJ/mol  
33
5,897.00 kJ/mol  
99+

7th Energy level
8,040.00 kJ/mol  
27
5,890.00 kJ/mol  
99+

8th Energy Level
8,040.00 kJ/mol  
27
5,890.00 kJ/mol  
99+

9th Energy Level
8,040.00 kJ/mol  
24
4,240.00 kJ/mol  
99+

10th Energy Level
8,040.00 kJ/mol  
28
5,890.00 kJ/mol  
99+

11th Energy Level
8,040.00 kJ/mol  
27
5,890.00 kJ/mol  
99+

12th Energy Level
8,040.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+

13th Energy Level
5,310.00 kJ/mol  
99+
5,890.00 kJ/mol  
99+

14th Energy Level
804.40 kJ/mol  
99+
5,890.00 kJ/mol  
37

15th Energy Level
80,400.00 kJ/mol  
16
58,900.00 kJ/mol  
99+

16th Energy Level
804.40 kJ/mol  
99+
58,900.00 kJ/mol  
38

17th Energy Level
804.40 kJ/mol  
33
589.30 kJ/mol  
99+

18th Energy Level
8,045.00 kJ/mol  
22
5,890.00 kJ/mol  
99+

19th Energy Level
804.40 kJ/mol  
30
589.30 kJ/mol  
99+

20th Energy Level
804.00 kJ/mol  
23
589.00 kJ/mol  
99+

21st Energy Level
804.40 kJ/mol  
99+
5,897.00 kJ/mol  
19

22nd Energy Level
804.00 kJ/mol  
18
589.00 kJ/mol  
99+

23rd Energy Level
804.40 kJ/mol  
99+
589.30 kJ/mol  
99+

24th Energy Level
804.40 kJ/mol  
14
589.30 kJ/mol  
99+

25th Energy Level
804.40 kJ/mol  
12
589.00 kJ/mol  
99+

26th Energy Level
804.40 kJ/mol  
12
589.30 kJ/mol  
99+

27th Energy Level
804.40 kJ/mol  
11
589.30 kJ/mol  
99+

28th Energy Level
804.40 kJ/mol  
17
589.30 kJ/mol  
99+

29th Energy Level
804.40 kJ/mol  
16
589.30 kJ/mol  
99+

30th Energy Level
804.00 kJ/mol  
12
589.70 kJ/mol  
99+

Electrochemical Equivalent
1.99 g/amp-hr  
34
2.08 g/amp-hr  
32

Electron Work Function
5.12 eV  
7
5.93 eV  
2

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

Atomic

Atomic Number
46  
99+
68  
99+

Electron Configuration
[Kr] 4d10  
[Xe] 4f12 6s2  

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

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

Atom
  
  

Number of Protons
46  
99+
68  
99+

Number of Neutrons
60  
99+
99  
34

Number of Electrons
46  
99+
68  
99+

Radius of an Atom
  
  

Atomic Radius
137.00 pm  
99+
176.00 pm  
20

Covalent Radius
139.00 pm  
99+
189.00 pm  
19

Van der Waals Radius
163.00 pm  
99+
0.00 pm  
99+

Atomic Weight
106.42 amu  
99+
167.26 amu  
99+

Atomic Volume
8.90 cm3/mol  
99+
18.40 cm3/mol  
37

Adjacent Atomic Numbers
  
  

Previous Element
Rhodium
  
Holmium
  

Next Element
Silver
  
Thulium
  

Valence Electron Potential
33.00 (-eV)  
99+
49.00 (-eV)  
30

Lattice Constant
389.07 pm  
28
355.88 pm  
99+

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

Lattice C/A Ratio
1.56  
99+
1.57  
40

Mechanical

Density
  
  

Density At Room Temperature
12.02 g/cm3  
31
9.07 g/cm3  
99+

Density When Liquid (at m.p.)
10.38 g/cm3  
38
8.86 g/cm3  
99+

Tensile Strength
550.00 MPa  
8
350.00 MPa  
12

Viscosity
0.00  
14
0.00  
25

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)  
29
0.00 (Pa)  
21

Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
30

Elasticity properties
  
  

Shear Modulus
44.00 GPa  
17
28.30 GPa  
31

Bulk Modulus
180.00 GPa  
9
44.40 GPa  
31

Young's Modulus
121.00 GPa  
18
69.90 GPa  
31

Poisson Ratio
0.39  
5
0.24  
28

Other Mechanical Properties
Ductile, Malleable, Weldable  
Malleable  

Magnetic

Magnetic Characteristics
  
  

Specific Gravity
12.02  
33
9.07  
99+

Magnetic Ordering
Diamagnetic  
Paramagnetic  

Permeability
0.00 H/m  
18
0.00 H/m  
17

Susceptibility
0.00  
27
0.00  
11

Electrical Properties
  
  

Electrical Property
Conductor  
Conductor  

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

Electrical Conductivity
0.10 106/cm Ω  
27
0.01 106/cm Ω  
99+

Electron Affinity
54.23 kJ/mol  
21
50.00 kJ/mol  
26

Thermal

Specific Heat
0.24 J/(kg K)  
23
0.17 J/(kg K)  
35

Molar Heat Capacity
25.98 J/mol·K  
99+
28.12 J/mol·K  
14

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

Critical Temperature
1,825.00 K  
26
1,802.00 K  
30

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

Enthalpy
  
  

Enthalpy of Vaporization
376.60 kJ/mol  
28
261.00 kJ/mol  
99+

Enthalpy of Fusion
16.74 kJ/mol  
18
17.20 kJ/mol  
15

Enthalpy of Atomization
393.30 kJ/mol  
29
314.00 kJ/mol  
99+

Standard Molar Entropy
37.60 J/mol.K  
99+
73.10 J/mol.K  
11

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