Chemical Elements.com - Rhodium (Rh)

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Basic Information

Name: Rhodium
Symbol: Rh
Atomic Number: 45
Atomic Mass: 102.9055 amu
Melting Point: 1966.0 °C (2239.15 K, 3570.8 °F)
Boiling Point: 3727.0 °C (4000.15 K, 6740.6 °F)
Number of Protons/Electrons: 45
Number of Neutrons: 58
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 12.41 g/cm³
Color: silverish

Atomic Structure

Number of Energy Levels: 5

First Energy Level:

Second Energy Level:

Third Energy Level:

Fourth Energy Level:

Fifth Energy Level:

Isotopes

Isotope	Half Life
Rh-101	3.3 years
Rh-101m	4.35 days
Rh-102	2.9 years
Rh-102m	207.0 days
Rh-103	Stable
Rh-103m	56.12 minutes
Rh-105	35.36 hours
Rh-105m	40.0 seconds
Rh-106	29.9 seconds

Facts

Date of Discovery: 1803
Discoverer: William Wollaston
Name Origin: From the Greek word rhodon (rose)
Uses: coatings
Obtained From: by-product of nickel production

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