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Indium vs Thulium

Indium
Thulium
Thulium vs Indium


Periodic Table
Symbol
In   
Tm   
Group Number
13   
5
Not Available   
Period Number
5   
6   
Block
p block   
f block   
Element Family
Post-​Transition   
Lanthanide   
CAS Number
7440746   
17
7440304   
99+
Space Group Name
I4/mmm   
P63/mmc   
Space Group Number
139.00   
8
194.00   
5
Facts
Interesting Facts
  • Luster of Indium is bright in nature.
  • Reich and richer were looking for thallium in zinc metal and they discovered Indium metal.
  
  • Thulium metal can resist corrosion due to dry air .
  • Only Tm-169 isotope of Thulium metal occur naturally.
  
Sources
Mining, Ores of metals   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Ferdinand Reich and Hieronymous Theodor Richter   
Per Teodor Cleve   
Discovery
In 1863   
In 1879   
Abundance
  
  
Abundance In Universe
3 * 10-8 %   
28
1 * 10-8 %   
30
Abundance In Sun
~0.0000004 %   
23
~0.00000002 %   
28
Abundance In Meteorites
0.00 %   
99+
0.00 %   
99+
Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
99+
Abundance In Oceans
0.00 %   
99+
0.00 %   
99+
Uses
Uses & Benefits
  • It is used to produce indium tin oxide (ITO), it is used in manufacturing touch screens, flat screen TVs and solar panels.
  • Its nitride, phosphide and antimonide are used in transistors and microchips.
  
  • 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
Aerospace Industry, Automobile Industry   
NA   
Medical Uses
Medical Research   
NA   
Other Uses
Alloys, In Nuclear Reactors   
Alloys, Nuclear Research, Research Purposes   
Biological Properties
  
  
Toxicity
Non Toxic   
Unknown   
Present in Human Body
Yes   
No   
Physical Properties
Melting Point
156.61 °C   
99+
1,545.00 °C   
23
Boiling Point
2,000.00 °C   
99+
1,730.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Silvery Gray   
Luster
Lustrous   
Metallic   
Hardness
  
  
Mohs Hardness
1.20   
20
Not Available   
Brinell Hardness
8.80 MPa   
99+
471.00 MPa   
25
Vickers Hardness
Not Available   
520.00 MPa   
21
Speed of Sound
1,215.00 m/s   
99+
Not Available   
Optical Properties
  
  
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
In   
Tm   
Isotopes
  
  
Known Isotopes
35   
4
32   
7
Electronegativity
  
  
Pauling Electronegativity
1.78   
16
1.25   
35
Sanderson Electronegativity
2.14   
8
Not Available   
Allred Rochow Electronegativity
1.49   
13
1.11   
29
Mulliken-Jaffe Electronegativity
1.76   
10
Not Available   
Allen Electronegativity
1.66   
18
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.22   
38
2.75   
19
Ionization Energies
  
  
1st Energy Level
558.30 kJ/mol   
99+
596.70 kJ/mol   
99+
2nd Energy Level
1,820.70 kJ/mol   
18
1,160.00 kJ/mol   
99+
3rd Energy Level
2,704.00 kJ/mol   
39
2,285.00 kJ/mol   
99+
4th Energy Level
5,210.00 kJ/mol   
17
4,120.00 kJ/mol   
33
Electrochemical Equivalent
1.43 g/amp-hr   
99+
2.10 g/amp-hr   
26
Electron Work Function
4.12 eV   
24
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
49   
99+
69   
99+
Electron Configuration
[Kr] 4d10 5s2 5p1   
[Xe] 4f13 6s2   
Crystal Structure
Tetragonal (TETR)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
TETR-Crystal-Structure-of-Indium.jpg#100   
HCP-Crystal-Structure-of-Thulium.jpg#100   
Atom
  
  
Number of Protons
49   
99+
69   
99+
Number of Neutrons
66   
99+
100   
32
Number of Electrons
49   
99+
69   
99+
Radius of an Atom
  
  
Atomic Radius
167.00 pm   
24
176.00 pm   
18
Covalent Radius
142.00 pm   
99+
160.00 pm   
30
Van der Waals Radius
193.00 pm   
31
Not Available   
Atomic Weight
114.82 amu   
99+
168.93 amu   
99+
Atomic Volume
15.70 cm3/mol   
33
18.10 cm3/mol   
28
Adjacent Atomic Numbers
  
  
Previous Element
Cadmium
  
Erbium
  
Next Element
Tin
  
Ytterbium
  
Valence Electron Potential
54.00 (-eV)   
25
49.70 (-eV)   
28
Lattice Constant
325.23 pm   
99+
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
7.31 g/cm3   
99+
9.32 g/cm3   
40
Density When Liquid (at m.p.)
7.02 g/cm3   
33
8.56 g/cm3   
24
Tensile Strength
2.50 MPa   
21
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.01 (Pa)   
11
0.06 (Pa)   
10
Elasticity properties
  
  
Shear Modulus
Not Available   
30.50 GPa   
22
Bulk Modulus
Not Available   
44.50 GPa   
26
Young's Modulus
11.00 GPa   
99+
74.00 GPa   
27
Poisson Ratio
Not Available   
0.21   
31
Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.31   
99+
9.32   
31
Magnetic Ordering
Diamagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
83.70 nΩ·m   
34
676.00 nΩ·m   
5
Electrical Conductivity
0.12 106/cm Ω   
17
0.02 106/cm Ω   
99+
Electron Affinity
28.90 kJ/mol   
31
50.00 kJ/mol   
21
Thermal Properties
Specific Heat
0.23 J/(kg K)   
27
0.16 J/(kg K)   
35
Molar Heat Capacity
26.74 J/mol·K   
25
27.03 J/mol·K   
22
Thermal Conductivity
81.80 W/m·K   
21
16.90 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
32.10 µm/(m·K)   
9
13.30 µm/(m·K)   
29
Enthalpy
  
  
Enthalpy of Vaporization
226.40 kJ/mol   
40
191.00 kJ/mol   
99+
Enthalpy of Fusion
3.28 kJ/mol   
99+
16.80 kJ/mol   
17
Enthalpy of Atomization
242.70 kJ/mol   
99+
247.00 kJ/mol   
99+
Standard Molar Entropy
57.80 J/mol.K   
22
74.00 J/mol.K   
9
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