The Element Rhodium


Rhodium is also a member of Platinum group and usually found in Platinum ores. This is usually the most expensive precious metal but sometimes surpassed by Rhenium depending on the market. The industrial extraction of Rhodium is usually complex and costly as Rhodium is found mixed with Platinum, Gold, Silver and Palladium. South Africa is the leader of Rhodium production and they have a market share of more than 80% followed by Russia. Rhodium is usually used as an electrical contact material due to its low electrical resistance. This element is also used in jewelry industry for plating on white gold and platinum.


Atomic Number & Chemical Properties


Element Basics:

Chemical Symbol: Rh
Atomic Number: 45
Atomic Weight: 102.9055
Element Classification: Transition Metal
Discovered By: William Wollaston
Date of Discovery: 1803 (England)
Origin of Name: Greek: rhodon (rose). Its salts give a rosy solution.

How to Recognize it at a Party:

Silvery white, hard metal

Seriously Atomic Information:

Density (g/cc): 12.41
Melting Point (°K): 2239
Boiling Point (°K): 4000
Atomic Radius (pm): 134
Atomic Volume (cc/mol): 8.3
Covalent Radius (pm): 125
Ionic Radius: 68 (+3e)
Pauling Negativity Number: 2.28
First Ionizing Energy (kJ/mol): 719.5
Oxidation States: 5, 4, 3, 2, 1, 0
Electronic Configuration: [Kr] 4d8 5s1

Getting Intimate with Rhodium:

Lattice Structure: Face-Centered Cubic (FCC)
Lattice Constant (Å): 3.800
Lattice C/A Ratio: n/a
Specific Heat (@20°C J/g mol): 0.244
Fusion Heat (kJ/mol): 21.8
Evaporation Heat (kJ/mol): 494
Thermal Conductivity (@25°C W/m K):
Debye Temperature (°K): n/a


Society's Questions About Rhodium:

Have you ever wondered what everyone else in the world thinks about Rhodium? Is anyone else looking for it too? If so, why? What do they want?

The following list shows the most common online questions about the element Rhodium. Are your questions the same or different from everyone else's?

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