Symbol
Bi
  
Pm
  
Group Number
Not Available
  
Period Number
6
  
6
  
Block
p block
  
f block
  
Element Family
Post-Transition
  
Lanthanide
  
Space Group Name
C12/m1
  
Not Available
  
Space Group Number
Not Available
  
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
Not Available
  
Abundance In Sun
~0.000006 %
  
14
~-9999 %
  
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available
  
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
  
Melting Point
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
Not Available
  
Brinell Hardness
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 Formula
Bi
  
Pm
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
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
Not Available
  
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility
  
Ionization, Radioactive Isotopes, Solubility
  
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
  
  
Radius of an Atom
  
  
Atomic Weight
145.00 amu
  
99+
Atomic Volume
21.30 cm3/mol
  
14
22.39 cm3/mol
  
12
Adjacent Atomic Numbers
  
  
Valence Electron Potential
41.90 (-eV)
  
99+
44.10 (-eV)
  
39
Lattice Constant
Not Available
  
Lattice Angles
NA
  
Unknown
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
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
  
  
Other Mechanical Properties
NA
  
NA
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Paramagnetic
  
Permeability
Not Available
  
Susceptibility
Not Available
  
Electrical Properties
  
  
Electrical Property
Semiconductor
  
Conductor
  
Electrical Conductivity
0.01 10
6/cm Ω
  
99+
Not Available
  
Electron Affinity
91.20 kJ/mol
  
11
50.00 kJ/mol
  
21
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