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Silver Thulium Comparison


Thulium Silver comparison


Periodic Table

Symbol
Ag   
Tm   

Group Number
11   
7
Not Available   

Period Number
5   
6   

Block
d block   
f block   

Element Family
Transition Metal   
Lanthanide   

CAS Number
7440224   
99+
7440304   
99+

Space Group Name
Fm_ 3m   
P63/mmc   

Space Group Number
225.00   
2
194.00   
5

Facts

Interesting Facts
  • It is the most reflective element.
  • Silver is the second most ductile metal after Gold.
  • It is also used in Dentistry as a dental alloys for clips and crowning.
  
  • Thulium metal can resist corrosion due to dry air .
  • Only Tm-169 isotope of Thulium metal occur naturally.
  

Sources
Earth's crust, Found in Minerals, Ores of metals   
Found in Minerals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Unknown   
Per Teodor Cleve   

Discovery
Before 5000 BC   
In 1879   

Abundance
  
  

Abundance In Universe
6 * 10-8 %   
26
1 * 10-8 %   
30

Abundance In Sun
~0.0000001 %   
26
~0.00000002 %   
28

Abundance In Meteorites
0.00 %   
38
0.00 %   
99+

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

Abundance In Oceans
0.00 %   
19
0.00 %   
99+

Uses

Uses & Benefits
  • Silver is mainly used for Jewelry and show piece.
  • It is used for manufacturing high quality mirrors due to its reflectivity property.
  
  • Thulium metal produces isotopes that emits X-rays. This isotope is used in X-ray machine.
  • Thulium element is also used in Surgical equipment like laser.
  

Industrial Uses
Chemical Industry, Clothing Industry, Electrical Industry   
NA   

Medical Uses
Dentistry, Pharmaceutical Industry   
NA   

Other Uses
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues   
Alloys, Nuclear Research, Research Purposes   

Biological Properties
  
  

Toxicity
Non Toxic   
Unknown   

Present in Human Body
Yes   
No   

In Blood
0.00 Blood/mg dm-3   
29
Not Available   

In Bone
0.44 p.p.m.   
20
Not Available   

Physical Properties

Melting Point
961.93 °C   
99+
1,545.00 °C   
23

Boiling Point
2,212.00 °C   
99+
1,730.00 °C   
99+

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery Gray   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
2.50   
14
Not Available   

Brinell Hardness
251.00 MPa   
37
471.00 MPa   
25

Vickers Hardness
229.00 MPa   
30
520.00 MPa   
21

Speed of Sound
2,680.00 m/s   
34
Not Available   

Optical Properties
  
  

Reflectivity
97.00 %   
1
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
Ag   
Tm   

Isotopes
  
  

Known Isotopes
36   
3
32   
7

Electronegativity
  
  

Pauling Electronegativity
1.93   
9
1.25   
35

Sanderson Electronegativity
1.83   
11
Not Available   

Allred Rochow Electronegativity
1.42   
18
1.11   
29

Mulliken-Jaffe Electronegativity
1.47   
15
Not Available   

Allen Electronegativity
1.87   
7
Not Available   

Electropositivity
  
  

Pauling Electropositivity
2.07   
99+
2.75   
19

Ionization Energies
  
  

1st Energy Level
731.00 kJ/mol   
27
596.70 kJ/mol   
99+

2nd Energy Level
2,070.00 kJ/mol   
11
1,160.00 kJ/mol   
99+

3rd Energy Level
3,361.00 kJ/mol   
19
2,285.00 kJ/mol   
99+

4th Energy Level
Not Available   
4,120.00 kJ/mol   
33

Electrochemical Equivalent
4.02 g/amp-hr   
7
2.10 g/amp-hr   
26

Electron Work Function
4.26 eV   
20
Not Available   

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

Atomic Properties

Atomic Number
47   
99+
69   
99+

Electron Configuration
[Kr] 4d10 5s1   
[Xe] 4f13 6s2   

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

Crystal Lattice
FCC-Crystal-Structure-of-Silver.jpg#100   
HCP-Crystal-Structure-of-Thulium.jpg#100   

Atom
  
  

Number of Protons
47   
99+
69   
99+

Number of Neutrons
61   
99+
100   
32

Number of Electrons
47   
99+
69   
99+

Radius of an Atom
  
  

Atomic Radius
144.00 pm   
36
176.00 pm   
18

Covalent Radius
145.00 pm   
39
160.00 pm   
30

Van der Waals Radius
172.00 pm   
38
Not Available   

Atomic Weight
107.87 amu   
99+
168.93 amu   
99+

Atomic Volume
10.30 cm3/mol   
99+
18.10 cm3/mol   
28

Adjacent Atomic Numbers
  
  

Previous Element
Palladium
  
Erbium
  

Next Element
Cadmium
  
Ytterbium
  

Valence Electron Potential
11.40 (-eV)   
99+
49.70 (-eV)   
28

Lattice Constant
408.53 pm   
20
353.75 pm   
40

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

Lattice C/A Ratio
Not Available   
1.57   
17

Mechanical Properties

Density
  
  

Density At Room Temperature
10.49 g/cm3   
35
9.32 g/cm3   
40

Density When Liquid (at m.p.)
9.32 g/cm3   
21
8.56 g/cm3   
24

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
14
0.06 (Pa)   
10

Elasticity properties
  
  

Shear Modulus
30.00 GPa   
23
30.50 GPa   
22

Bulk Modulus
100.00 GPa   
16
44.50 GPa   
26

Young's Modulus
83.00 GPa   
23
74.00 GPa   
27

Poisson Ratio
0.37   
7
0.21   
31

Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
10.50   
26
9.32   
31

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Susceptibility
0.00   
5
Not Available   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
15.87 nΩ·m   
99+
676.00 nΩ·m   
5

Electrical Conductivity
0.63 106/cm Ω   
1
0.02 106/cm Ω   
99+

Electron Affinity
125.60 kJ/mol   
5
50.00 kJ/mol   
21

Thermal Properties

Specific Heat
0.24 J/(kg K)   
25
0.16 J/(kg K)   
35

Molar Heat Capacity
25.35 J/mol·K   
99+
27.03 J/mol·K   
22

Thermal Conductivity
429.00 W/m·K   
1
16.90 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
18.90 µm/(m·K)   
23
13.30 µm/(m·K)   
29

Enthalpy
  
  

Enthalpy of Vaporization
255.10 kJ/mol   
37
191.00 kJ/mol   
99+

Enthalpy of Fusion
11.30 kJ/mol   
31
16.80 kJ/mol   
17

Enthalpy of Atomization
284.50 kJ/mol   
37
247.00 kJ/mol   
99+

Standard Molar Entropy
42.60 J/mol.K   
35
74.00 J/mol.K   
9

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