Element Family
Alkali
Transition Metal
Space Group Name
Not Available
P63/mmc
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.
- The only metal which burns in Nitrogen is Titanium.
- Titanium is also known as corrosion resistant metal.
Sources
Formed by Decay Process, Mining
Found in Minerals, Mining
Who Discovered
Marguerite Perey
W. Gregor & J. Berzelius
Discovery
In 1939
In 1791
Abundance In Universe
Not Available
Abundance In Sun
~-9999 %
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.
- Its alloys are used in spacecraft, aircraft and ammunition industry.
- Its pipes are used in distillation plants, submarines, hulls of big ships, etc.
Industrial Uses
NA
Aerospace Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry
Medical Uses
NA
Dentistry, Surgical Instruments Manufacturing
Other Uses
NA
Alloys, Jewellery, Sculptures, Statues
Present in Human Body
No
Yes
Physical State
Solid
Solid
Color
NA
Silvery Gray-White
Mohs Hardness
Not Available
Brinell Hardness
Not Available
Vickers Hardness
Not Available
Speed of Sound
Not Available
α Allotropes
Not Available
Not Available
β Allotropes
Not Available
Not Available
γ Allotropes
Not Available
Not Available
Pauling Electronegativity
Sanderson Electronegativity
Not Available
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
Pauling Electropositivity
2nd Energy Level
Not Available
3rd Energy Level
Not Available
4th Energy Level
Not Available
5th Energy Level
Not Available
6th Energy Level
Not Available
7th Energy level
Not Available
8th Energy Level
Not Available
9th Energy Level
Not Available
10th Energy Level
Not Available
11th Energy Level
Not Available
12th Energy Level
Not Available
13th Energy Level
Not Available
14th Energy Level
Not Available
15th Energy Level
Not Available
16th Energy Level
Not Available
17th Energy Level
Not Available
18th Energy Level
Not Available
19th Energy Level
Not Available
20th Energy Level
Not Available
Electrochemical Equivalent
Electron Work Function
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility
Chemical Stability, Ionization
Electron Configuration
[Rn] 7s1
[Ar] 3d2 4s2
Crystal Structure
Body Centered Cubic (BCC)
Hexagonal Close Packed (HCP)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
HCP-Crystal-Structure-of-Titanium.jpg#100
Atomic Radius
Not Available
Atomic Volume
Not Available
Valence Electron Potential
Lattice Constant
Not Available
Lattice Angles
NA
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Not Available
Tensile Strength
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure at 2000 K
Not Available
Shear Modulus
Not Available
Bulk Modulus
Not Available
Young's Modulus
Not Available
Poisson Ratio
Not Available
Other Mechanical Properties
NA
Ductile
Specific Gravity
Not Available
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Property
Poor Conductor
Poor Conductor
Electron Affinity
Not Available
Specific Heat
Not Available
Molar Heat Capacity
Not Available
Critical Temperature
Not Available
Not Available
Thermal Expansion
Not Available
Enthalpy of Vaporization
Not Available
Enthalpy of Fusion
Not Available
Standard Molar Entropy
Not Available