Element Family
Transition Metal
Post-Transition
Space Group Name
Fm_ 3m
Pm-3m
Interesting Facts
- Rhodium is the rarest element out of all non-radioactive metals on the earth .
- Rhodium is one of the most durable and hard metal, which also have high reflectance.
- 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
Earth's crust, Found As a By-product, Found in Minerals, Mining
Mining, Ores of metals
Who Discovered
William Hyde Wollaston
Pierre Curie and Marie Curie
Discovery
In 1804
In 1898
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
- Rhodium metal is mainly used in catalytic converters for cars as it reduces nitrogen oxides in exhaust gases.
- It is used as an industrial catalyst for nitric acid, acetic acid, hydrogenation reaction, etc.
- 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
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
Aerospace Industry, Ammunition Industry
Present in Human Body
No
No
Physical State
Solid
Solid
Color
Silvery White
Silver
Mohs Hardness
Not Available
Brinell Hardness
Not Available
Vickers Hardness
Not Available
Speed of Sound
Not Available
Reflectivity
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
Not Available
Pauling Electropositivity
2nd Energy Level
Not Available
3rd Energy Level
Not Available
Electrochemical Equivalent
Electron Work Function
Not Available
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes
Ionization, Radioactive Isotopes, Solubility
Electron Configuration
[Kr] 4d8 5s1
[Xe] 4f14 5d10 6s2 6p4
Crystal Structure
Face Centered Cubic (FCC)
Monoclinic (MON)
Crystal Lattice
FCC-Crystal-Structure-of-Rhodium.jpg#100
MON-Crystal-Structure-of-Polonium.jpg#100
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.)
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
Malleable
NA
Magnetic Ordering
Paramagnetic
Nonmagnetic
Electrical Property
Conductor
Conductor
Critical Temperature
Not Available
Not Available
Standard Molar Entropy
Not Available