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Rhodium
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Rhodium is a chemical element that is a rare, silvery-white, hard and chemically inert transition metal and a member of the platinum group. It has the chemical symbol Rh and atomic number 45. Naturally-occurring rhodium is composed of only one isotope, 103Rh. It is one of the rarest precious metals and, with a price of about US$80,000/kg in 2010, is the most expensive member of that class.
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[edit] History
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[edit] Metallurgy
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[edit] Corrosion
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[edit] Conservation of rhodium plated objects
[edit] Cleaning
- Mechanical
- Chemical
100 gms soapwort root (Saponaria Officinalis)
1 lit water
Mix root and boiling water i pyrex jar,cover, after 10 minutes it is ready to use.Fresh solution is pH neutral,few days old is slightly acid (pH 5).
According to:
Personal experience[citation needed]
- Electrochemical
- Ultrasonic
- Laser
[edit] Further reading
Cotton,S.A. Chemistry of Precious Metals,New York 1997.
