Element Family
Transition Metal
Post-Transition
Space Group Name
Fm_ 3m
P63/mmc
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.
- Compounds of Thallium metal are highly Toxic.
- Thallium metal is being suspected as a human carcinogen.
Sources
Earth's crust, Found As a By-product, Found in Minerals, Mining
Found As a By-product, Ores of metals, Ores of Minerals
Who Discovered
William Hyde Wollaston
William Crookes
Discovery
In 1804
In 1861
Abundance In Earth's Crust
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.
- Thallium is a toxic metal and hence it has limited uses. Thallium metal is mostly used for producing photoelectric cells.
- In thermometer’s mercury alloy has 8% of thallium, as it has a melting point lower than 20°C.
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry
Chemical Industry
Medical Uses
NA
Medical Research
Present in Human Body
No
Yes
Physical State
Solid
Solid
Color
Silvery White
Silvery White
Vickers Hardness
Not Available
Reflectivity
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
Electrochemical Equivalent
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes
Corrosion, Ionization, Radioactive Isotopes, Solubility
Electron Configuration
[Kr] 4d8 5s1
[Xe] 4f14 5d10 6s2 6p1
Crystal Structure
Face Centered Cubic (FCC)
Hexagonal Close Packed (HCP)
Crystal Lattice
FCC-Crystal-Structure-of-Rhodium.jpg#100
BCC-Crystal-Structure-.jpg#100
Valence Electron Potential
Lattice Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3
Lattice C/A Ratio
Not Available
Density At Room Temperature
Density When Liquid (at m.p.)
Tensile Strength
Not Available
Viscosity
Not Available
Not Available
Vapor Pressure at 1000 K
Not Available
Vapor Pressure at 2000 K
Not Available
Other Mechanical Properties
Malleable
Ductile, Sectile
Magnetic Ordering
Paramagnetic
Diamagnetic
Electrical Property
Conductor
Conductor
Critical Temperature
Not Available
Not Available