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Thulium Lead Comparison

Thulium
Lead
Lead Thulium comparison


Periodic Table
Symbol
Tm   
Pb   
Group Number
Not Available   
14   
4
Period Number
6   
6   
Block
f block   
p block   
Element Family
Lanthanide   
Post-​Transition   
CAS Number
7440304   
99+
7439921   
99+
Space Group Name
P63/mmc   
Fm_ 3m   
Space Group Number
194.00   
5
225.00   
2
Facts
Interesting Facts
  • Thulium metal can resist corrosion due to dry air .
  • Only Tm-169 isotope of Thulium metal occur naturally.
  
  • Galena mineral contains almost 87% of Lead metal in it, Galena is sulfide mineral.
  • The best available source of Lead metal today is by recycling automobile batteries.
  
Sources
Found in Minerals, Mining, Ores of Minerals   
Earth's crust, Found in Minerals, Mining, Ores of metals, Ores of Minerals   
History
  
  
Who Discovered
Per Teodor Cleve   
Unknown   
Discovery
In 1879   
In Middle Easterns (7000 BCE)   
Abundance
  
  
Abundance In Universe
1 * 10-8 %   
30
1 * 10-6 %   
16
Abundance In Sun
~0.00000002 %   
28
~0.000001 %   
18
Abundance In Meteorites
0.00 %   
99+
0.00 %   
23
Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
26
Abundance In Oceans
0.00 %   
99+
0.00 %   
22
Abundance In Humans
Not Available   
0.00 %   
8
Uses
Uses & Benefits
  • 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.
  
  • It is also used in insecticides, hair dyes and as an anti-knocking additive for petrol. But all these are banned by the government as Lead metal is known for detrimental to health.
  
Industrial Uses
NA   
Chemical Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
Surgical Instruments Manufacturing   
Other Uses
Alloys, Nuclear Research, Research Purposes   
Alloys   
Biological Properties
  
  
Toxicity
Unknown   
Toxic   
Present in Human Body
No   
Yes   
In Blood
Not Available   
0.21 Blood/mg dm-3   
11
In Bone
Not Available   
30.00 p.p.m.   
10
Physical Properties
Melting Point
1,545.00 °C   
23
327.50 °C   
99+
Boiling Point
1,730.00 °C   
99+
1,740.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Gray   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
1.50   
18
Brinell Hardness
471.00 MPa   
25
38.00 MPa   
99+
Vickers Hardness
520.00 MPa   
21
Not Available   
Speed of Sound
Not Available   
1,190.00 m/s   
99+
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
Tm   
Pb   
Isotopes
  
  
Known Isotopes
32   
7
35   
4
Electronegativity
  
  
Pauling Electronegativity
1.25   
35
1.87   
13
Sanderson Electronegativity
Not Available   
2.29   
4
Allred Rochow Electronegativity
1.11   
29
1.55   
11
Mulliken-Jaffe Electronegativity
Not Available   
2.41   
2
Allen Electronegativity
Not Available   
1.85   
8
Electropositivity
  
  
Pauling Electropositivity
2.75   
19
1.67   
99+
Ionization Energies
  
  
1st Energy Level
596.70 kJ/mol   
99+
715.60 kJ/mol   
31
2nd Energy Level
1,160.00 kJ/mol   
99+
1,450.50 kJ/mol   
99+
3rd Energy Level
2,285.00 kJ/mol   
99+
3,081.50 kJ/mol   
23
4th Energy Level
4,120.00 kJ/mol   
33
4,083.00 kJ/mol   
35
5th Energy Level
Not Available   
6,640.00 kJ/mol   
20
Electrochemical Equivalent
2.10 g/amp-hr   
26
3.87 g/amp-hr   
9
Electron Work Function
Not Available   
4.25 eV   
21
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Anti Corrosion, Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
69   
99+
82   
34
Electron Configuration
[Xe] 4f13 6s2   
[Xe] 4f14 5d10 6s2 6p2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Thulium.jpg#100   
FCC-Crystal-Structure-of-Lead.jpg#100   
Atom
  
  
Number of Protons
69   
99+
82   
34
Number of Neutrons
100   
32
125   
19
Number of Electrons
69   
99+
82   
34
Radius of an Atom
  
  
Atomic Radius
176.00 pm   
18
175.00 pm   
19
Covalent Radius
160.00 pm   
30
146.00 pm   
38
Van der Waals Radius
Not Available   
202.00 pm   
27
Atomic Weight
168.93 amu   
99+
207.20 amu   
30
Atomic Volume
18.10 cm3/mol   
28
18.17 cm3/mol   
27
Adjacent Atomic Numbers
  
  
Previous Element
Erbium
  
Thallium
  
Next Element
Ytterbium
  
Bismuth
  
Valence Electron Potential
49.70 (-eV)   
28
24.20 (-eV)   
99+
Lattice Constant
353.75 pm   
40
495.08 pm   
16
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.57   
17
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
9.32 g/cm3   
40
11.34 g/cm3   
33
Density When Liquid (at m.p.)
8.56 g/cm3   
24
10.66 g/cm3   
15
Tensile Strength
Not Available   
12.00 MPa   
20
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.06 (Pa)   
10
1.64 (Pa)   
7
Elasticity properties
  
  
Shear Modulus
30.50 GPa   
22
5.60 GPa   
99+
Bulk Modulus
44.50 GPa   
26
46.00 GPa   
24
Young's Modulus
74.00 GPa   
27
16.00 GPa   
99+
Poisson Ratio
0.21   
31
0.44   
3
Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
9.32   
31
11.35   
25
Magnetic Ordering
Paramagnetic   
Diamagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Poor Conductor   
Resistivity
676.00 nΩ·m   
5
208.00 nΩ·m   
16
Electrical Conductivity
0.02 106/cm Ω   
99+
0.05 106/cm Ω   
36
Electron Affinity
50.00 kJ/mol   
21
35.10 kJ/mol   
28
Thermal Properties
Specific Heat
0.16 J/(kg K)   
35
0.13 J/(kg K)   
39
Molar Heat Capacity
27.03 J/mol·K   
22
26.65 J/mol·K   
26
Thermal Conductivity
16.90 W/m·K   
99+
35.30 W/m·K   
38
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
13.30 µm/(m·K)   
29
28.90 µm/(m·K)   
13
Enthalpy
  
  
Enthalpy of Vaporization
191.00 kJ/mol   
99+
179.40 kJ/mol   
99+
Enthalpy of Fusion
16.80 kJ/mol   
17
4.77 kJ/mol   
99+
Enthalpy of Atomization
247.00 kJ/mol   
99+
194.60 kJ/mol   
99+
Standard Molar Entropy
74.00 J/mol.K   
9
64.80 J/mol.K   
17
Summary >>
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