| Shape: | Powder |
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| Purity: | 99.999% |
| Chemical Composition: | Rhodium |
| Transport Package: | Vacuum Packed or Per Customer′s Request. |
| Specification: | -200mesh |
| Trademark: | Rheniumet |
| Customization: |
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Alias Name: Rhodium;Rhodium powder
Appearance: Grey Metallic Powder
CAS Number: 7440-16-6
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. It is composed of only one naturallyoccurring isotope, 103Rh. Naturally occurring rhodium is usually found as the free metal, alloyed with similar metals, and rarely as a chemical compound in minerals such as bowieite and rhodplumsite. It is one of the rarest and most valuable precious metals.
Rhodium is a so-called noble metal, resistant to corrosion, found in platinumor nickel ores together with the other members of the platinum group metals. It was discovered in 1803 by William Hyde Wollaston in one such ore, and named for the rose color of one of its chlorine compounds, produced after it reacted with the powerful acid mixture aqua regia.
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Element category: transition metal
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Standard atomic weight : 102.90550
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Phase : solid
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Density(near r.t.) : 12.41 g·cm−3
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Liquid density atm.p : 10.7 g·cm−3
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Melting point : 2237 K, 1964 °C, 3567 °F
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Boiling point : 3968 K, 3695 °C, 6683 °F
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Atomic radius : 134 pm
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Covalent radius : 142±7 pm
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Crystal structure : face-centered cubic
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Vickers hardness : 1246 MPa
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Brinell hardness : 1100 MPa
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