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Bismuth vs Promethium


Promethium vs Bismuth


Periodic Table

Symbol
Bi   
Pm   

Group Number
15   
3
Not Available   

Period Number
6   
6   

Block
p block   
f block   

Element Family
Post-​Transition   
Lanthanide   

CAS Number
7440699   
22
7440122   
99+

Space Group Name
C12/m1   
Not Available   

Space Group Number
12.00   
12
Not Available   

Facts

Interesting Facts
  • Bismuth metal is soluble and reacts with concentrated nitric acid.
  • It oxides are used as a yellow pigment in paint. Bismuth chloride oxide BiClO gives a pearly texture to cosmetics.
  
  • Promethium metal found in Pitchblende.
  • Promethium metal is highly radioactive metal.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Found in Minerals, Mining   

History
  
  

Who Discovered
Claude François Geoffroy   
Chien Shiung Wu, Emilio Segrè, Hans Bethe   

Discovery
In 1753   
In 1942   

Abundance
  
  

Abundance In Universe
7 * 10-8 %   
25
Not Available   

Abundance In Sun
~0.000006 %   
14
~-9999 %   

Abundance In Meteorites
0.00 %   
99+
Not Available   

Abundance In Earth's Crust
0.00 %   
99+
Not Available   

Abundance In Oceans
0.00 %   
24
Not Available   

Uses

Uses & Benefits
  • Tin and bismuth alloys have a very low melting point and hence it is used in fire detector and the fire extinguishers. It also used in electric solders and fuses.
  
  • It is used for research purpose. Very small amount of this metal is used in atomic batteries.
  • Its radioactive decay is used for a phosphor to give off light. The light emitted is converted into electricity.
  

Industrial Uses
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
NA   

Medical Uses
Pharmaceutical Industry   
NA   

Other Uses
Alloys   
NA   

Biological Properties
  
  

Toxicity
Low Toxic   
Non Toxic   

Present in Human Body
Yes   
No   

In Blood
0.02 Blood/mg dm-3   
20
0.00 Blood/mg dm-3   
37

In Bone
0.20 p.p.m.   
22
Not Available   

Physical Properties

Melting Point
271.30 °C   
99+
1,042.00 °C   
99+

Boiling Point
1,560.00 °C   
99+
3,000.00 °C   
31

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Unknown   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
2.25   
15
Not Available   

Brinell Hardness
70.00 MPa   
99+
Not Available   

Speed of Sound
1,790.00 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
Bi   
Pm   

Isotopes
  
  

Known Isotopes
33   
6
27   
12

Electronegativity
  
  

Pauling Electronegativity
2.02   
6
Not Available   

Sanderson Electronegativity
2.34   
3
Not Available   

Allred Rochow Electronegativity
1.67   
6
1.07   
32

Mulliken-Jaffe Electronegativity
2.15   
4
Not Available   

Allen Electronegativity
2.01   
4
Not Available   

Electropositivity
  
  

Pauling Electropositivity
1.98   
99+
Not Available   

Ionization Energies
  
  

1st Energy Level
703.00 kJ/mol   
35
540.00 kJ/mol   
99+

2nd Energy Level
1,610.00 kJ/mol   
33
1,050.00 kJ/mol   
99+

3rd Energy Level
2,466.00 kJ/mol   
99+
2,150.00 kJ/mol   
99+

4th Energy Level
4,370.00 kJ/mol   
28
3,970.00 kJ/mol   
38

5th Energy Level
5,400.00 kJ/mol   
30
Not Available   

6th Energy Level
8,520.00 kJ/mol   
19
Not Available   

Electrochemical Equivalent
2.60 g/amp-hr   
19
1.80 g/amp-hr   
36

Electron Work Function
4.22 eV   
22
Not Available   

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

Atomic Properties

Atomic Number
83   
33
61   
99+

Electron Configuration
[Xe] 4f14 5d10 6s2 6p3   
[Xe] 4f5 6s2   

Crystal Structure
Rhombohedral (RHO)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
RHO-Crystal-Structure-of-Bismuth.jpg#100   
DHCP-Crystal-Structure-of-Promethium.jpg#100   

Atom
  
  

Number of Protons
83   
33
61   
99+

Number of Neutrons
126   
18
84   
40

Number of Electrons
83   
33
61   
99+

Radius of an Atom
  
  

Atomic Radius
156.00 pm   
29
183.00 pm   
10

Covalent Radius
148.00 pm   
36
199.00 pm   
12

Van der Waals Radius
207.00 pm   
26
236.00 pm   
16

Atomic Weight
208.98 amu   
29
145.00 amu   
99+

Atomic Volume
21.30 cm3/mol   
14
22.39 cm3/mol   
12

Adjacent Atomic Numbers
  
  

Previous Element
Lead
  
Neodymium
  

Next Element
Polonium
  
Samarium
  

Valence Electron Potential
41.90 (-eV)   
99+
44.10 (-eV)   
39

Lattice Constant
667.40 pm   
2
Not Available   

Lattice Angles
NA   
Unknown   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
9.78 g/cm3   
39
7.26 g/cm3   
99+

Density When Liquid (at m.p.)
10.05 g/cm3   
18
Not Available   

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Elasticity properties
  
  

Shear Modulus
12.00 GPa   
99+
18.00 GPa   
36

Bulk Modulus
31.00 GPa   
38
33.00 GPa   
36

Young's Modulus
32.00 GPa   
99+
46.00 GPa   
38

Poisson Ratio
0.33   
11
0.28   
17

Other Mechanical Properties
NA   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
9.79   
30
7.26   
99+

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Permeability
0.00 H/m   
6
Not Available   

Susceptibility
0.00   
6
Not Available   

Electrical Properties
  
  

Electrical Property
Semiconductor   
Conductor   

Resistivity
1.29 nΩ·m   
99+
0.75 nΩ·m   
99+

Electrical Conductivity
0.01 106/cm Ω   
99+
Not Available   

Electron Affinity
91.20 kJ/mol   
11
50.00 kJ/mol   
21

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
0.18 J/(kg K)   
33

Molar Heat Capacity
25.52 J/mol·K   
37
Not Available   

Thermal Conductivity
7.97 W/m·K   
99+
17.90 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
13.40 µm/(m·K)   
28
9.00 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
151.00 kJ/mol   
99+
Not Available   

Enthalpy of Fusion
10.90 kJ/mol   
33
7.50 kJ/mol   
99+

Enthalpy of Atomization
207.10 kJ/mol   
99+
310.00 kJ/mol   
34

Standard Molar Entropy
56.70 J/mol.K   
24
Not Available   

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