Element Family
Alkaline Earth
Post-Transition
Space Group Name
Im_ 3m
Pm-3m
Interesting Facts
- Radium metal is the heaviest metal of Alkaline earth metals column.
- Radium metal is highly radioactive and does not have any stable isotopes.
- Polonium was the first radioactive element to be discovered.
- Polonium element and its compounds are highly radioactive.
- Its alloy with Beryllium provides source of neutrons.
Sources
Mining, Ores of metals
Mining, Ores of metals
Who Discovered
Not Available
Pierre Curie and Marie Curie
Discovery
In 1898
In 1898
Abundance In Earth's Crust
Not Available
Abundance In Humans
Not Available
Uses & Benefits
- It is a highly radioactive metal; and sometime Radium-223 is used to treat prostate cancer.
-
It is used in luminous paints.
- Polonium metal has different Allotropes, it is used in antistatic devices and for research purpose.
- A 1 gram of Polonium can reach a temperature of 500°C, hence it is used as a heat source for space equipment.
Industrial Uses
NA
Aerospace Industry, Ammunition Industry
Medical Uses
Pharmaceutical Industry
NA
Toxicity
Highly Toxic
Highly Toxic
Present in Human Body
No
No
Physical State
Solid
Solid
Color
Silvery White
Silver
Speed of Sound
Not Available
Not Available
α Allotropes
Not Available
α-polonium
β Allotropes
Not Available
β-polonium
γ Allotropes
Not Available
Not Available
Pauling Electronegativity
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Pauling Electropositivity
2nd Energy Level
Not Available
Electrochemical Equivalent
Electron Work Function
Not Available
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Solubility
Electron Configuration
[Rn] 7s2
[Xe] 4f14 5d10 6s2 6p4
Crystal Structure
Body Centered Cubic (BCC)
Monoclinic (MON)
Crystal Lattice
BCC-Crystal-Structure-.jpg#100
MON-Crystal-Structure-of-Polonium.jpg#100
Atomic Radius
Not Available
Valence Electron Potential
Not Available
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Not Available
Tensile Strength
Not Available
Not Available
Viscosity
Not Available
Not Available
Poisson Ratio
Not Available
Not Available
Other Mechanical Properties
NA
NA
Magnetic Ordering
Nonmagnetic
Nonmagnetic
Electrical Property
NA
Conductor
Electrical Conductivity
Not Available
Electron Affinity
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