Symbol
Fr
  
Bi
  
Period Number
7
  
6
  
Block
s block
  
p block
  
Element Family
Alkali
  
Post-Transition
  
Space Group Name
Not Available
  
C12/m1
  
Space Group Number
Not Available
  
Interesting Facts
- 223 Francium has the longest half life at 21.8.
- Francium metal is produced by alpha decay in 227Actinium 227.
  
- 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.
  
Sources
Formed by Decay Process, Mining
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Marguerite Perey
  
Claude François Geoffroy
  
Discovery
In 1939
  
In 1753
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.000006 %
  
14
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Not Available
  
Abundance In Oceans
Not Available
  
Uses & Benefits
- Francium has no known uses as it has a half life of only 22 minutes.
  
- 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.
  
Industrial Uses
NA
  
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
  
Medical Uses
NA
  
Pharmaceutical Industry
  
Other Uses
NA
  
Alloys
  
Biological Properties
  
  
Toxicity
NA
  
Low Toxic
  
Present in Human Body
No
  
Yes
  
In Blood
0.00 Blood/mg dm-3
  
37
0.02 Blood/mg dm-3
  
20
In Bone
0.00 p.p.m.
  
36
0.20 p.p.m.
  
22
Boiling Point
1,560.00 °C
  
99+
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
NA
  
Silver
  
Luster
NA
  
Metallic
  
Hardness
  
  
Mohs Hardness
Not Available
  
Brinell Hardness
Not Available
  
Speed of Sound
Not Available
  
1,790.00 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 Formula
Fr
  
Bi
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Electropositivity
  
  
Pauling Electropositivity
Ionization Energies
  
  
1st Energy Level
380.00 kJ/mol
  
99+
703.00 kJ/mol
  
35
2nd Energy Level
Not Available
  
1,610.00 kJ/mol
  
33
3rd Energy Level
Not Available
  
2,466.00 kJ/mol
  
99+
4th Energy Level
Not Available
  
4,370.00 kJ/mol
  
28
5th Energy Level
Not Available
  
5,400.00 kJ/mol
  
30
6th Energy Level
Not Available
  
8,520.00 kJ/mol
  
19
Electrochemical Equivalent
8.32 g/amp-hr
  
1
2.60 g/amp-hr
  
19
Electron Work Function
Not Available
  
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
  
Ionization, Radioactive Isotopes, Solubility
  
Electron Configuration
[Rn] 7s1
  
[Xe] 4f14 5d10 6s2 6p3
  
Crystal Structure
Body Centered Cubic (BCC)
  
Rhombohedral (RHO)
  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
  
RHO-Crystal-Structure-of-Bismuth.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Radius
Not Available
  
Atomic Volume
Not Available
  
21.30 cm3/mol
  
14
Adjacent Atomic Numbers
  
  
Valence Electron Potential
8.00 (-eV)
  
99+
41.90 (-eV)
  
99+
Lattice Constant
Not Available
  
Lattice Angles
NA
  
NA
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
1.87 g/cm3
  
99+
Density When Liquid (at m.p.)
Not Available
  
10.05 g/cm3
  
18
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
NA
  
NA
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Paramagnetic
  
Diamagnetic
  
Permeability
Not Available
  
Susceptibility
Not Available
  
Electrical Properties
  
  
Electrical Property
Poor Conductor
  
Semiconductor
  
Electrical Conductivity
0.03 106/cm Ω
  
40
0.01 106/cm Ω
  
99+
Electron Affinity
Not Available
  
91.20 kJ/mol
  
11
Specific Heat
Not Available
  
0.12 J/(kg K)
  
40
Molar Heat Capacity
Not Available
  
25.52 J/mol·K
  
37
Thermal Conductivity
15.00 W/m·K
  
99+
7.97 W/m·K
  
99+
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
Not Available
  
13.40 µm/(m·K)
  
28
Enthalpy
  
  
Enthalpy of Vaporization
Not Available
  
151.00 kJ/mol
  
99+
Enthalpy of Fusion
Not Available
  
10.90 kJ/mol
  
33
Enthalpy of Atomization
71.00 kJ/mol
  
99+
207.10 kJ/mol
  
99+
Standard Molar Entropy
Not Available
  
56.70 J/mol.K
  
24