HHomeBackground Color:He
LiBeRhodium Pictures PageBlack White GrayBCNOFNe
NaMgRhodium Technical DataAlSiPSClAr
KCaRhodium Isotope DataScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnUutUuqUupUuhUusUuo
Rhodium     

Rhodium

Atomic Weight 102.9055
Density 12.45 g/cm3
Melting Point 1964 °C
Boiling Point 3695 °C
Full technical data

Rhodium is very expensive, yet cheap jewelry is often rhodium-plated because so little is needed to make an opaque, super-shiny coating. Solid rhodium jewelry is never seen: it would be impossibly costly.

Scroll down to see examples of Rhodium.
The Elements book Mad Science book Periodic Table Poster  Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here!
Rhodium Rhodium-plated cuff links

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Rhodium-plated cuff links.
Very shiny rhodium-plated cuff links
Source: eBay seller pancholv
Contributor: Theodore Gray
Acquired: 24 March, 2009
Text Updated: 24 March, 2009
Price: $15
Size: 1"
Purity: <0.01%
Rhodium Rhodium-plated cuff links

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Rhodium-plated cuff links.
Very shiny rhodium-plated cuff links
Source: eBay seller pancholv
Contributor: Theodore Gray
Acquired: 24 March, 2009
Text Updated: 24 March, 2009
Price: $15
Size: 1"
Purity: <0.01%
Rhodium Rhodium-plated Sacagawea coin

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Rhodium-plated Sacagawea coin.
What a peculiar thing: Just for fun, someone with a rhodium plater decided to rhodium-plate an ordinarily gold-colored Sacagawea dollar coin and sell it on eBay. Curiously, I decided to buy it, for 50% over face value!
Source: eBay seller jeffshobbies
Contributor: Theodore Gray
Acquired: 11 March, 2009
Text Updated: 17 March, 2009
Price: $1.50
Size: 1"
Purity: <0.1%
Rhodium Questionable medallion

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Questionable medallion.
This commemorative medallion was advertised as being made of an alloy of 1/3 rhodium and 2/3 nickel. Very unlikely, but I haven't had it tested yet, so I'm not going to make a definitive statement yet.
Source: eBay seller alpha-omegaman
Contributor: Theodore Gray
Acquired: 11 March, 2009
Text Updated: 12 March, 2009
Price: $107
Size: 1.25"
Purity: <0.01%
Rhodium Reed switches

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Reed switches.
These reed switches have rhodium-plated electrical contacts. I don't know why rhodium and not gold, a more common contact material. Reed switches work by opening or closing when a magnet is moved close to the sealed glass tube. These are normally closed switches.
Source: eBay seller virtualvillage-usa
Contributor: Theodore Gray
Acquired: 28 February, 2009
Text Updated: 1 March, 2009
Price: $0.30
Size: 1"
Purity: 98%
Rhodium Poster sample

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Poster sample.
This is the same sample as the one from the RGB set above, as it appears in my Photographic Periodic Table Poster. The sample photograph includes text exactly as it appears in the poster, which you are encouraged to buy a copy of.
Periodic Table Poster
Source: Max Whitby of RGB
Contributor: Max Whitby of RGB
Acquired: 25 January, 2003
Text Updated: 4 May, 2007
Price: Donated
Size: 0.2"
Purity: 99.8%
Rhodium Museum-grade sample

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Museum-grade sample.
In early 2004 Max Whitby and I started selling individual element samples identical or similar to the samples we use in the museum displays we build. These are top-quality samples presented in attractive forms appropriate to the particular element. They are for sale from Max's website and also on eBay where you will find an ever-changing selection of samples (click the link to see the current listings).
This bottle contains about 50 grams of arc-melted buttons made in Max's reduced-pressure argon-arc furnace.
Source: Theodore Gray
Contributor: Theodore Gray
Acquired: 24 February, 2004
Text Updated: 11 August, 2007
Price: See Listing
Size: 2"
Purity: >99%
Sample Group: RGB Samples
Rhodium Sample from the Everest Set

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Sample from the Everest Set.
Up until the early 1990's a company in Russia sold a periodic table collection with element samples. At some point their American distributor sold off the remaining stock to a man who is now selling them on eBay. The samples (except gases) weigh about 0.25 grams each, and the whole set comes in a very nice wooden box with a printed periodic table in the lid.

To learn more about the set you can visit my page about element collecting for a general description and information about how to buy one, or you can see photographs of all the samples from the set displayed on my website in a periodic table layout or with bigger pictures in numerical order.

Source: Rob Accurso
Contributor: Rob Accurso
Acquired: 7 February, 2003
Text Updated: 29 January, 2009
Price: Donated
Size: 0.2"
Purity: >99%
Rhodium Sample from the RGB Set

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Sample from the RGB Set.
The Red Green and Blue company in England sells a very nice element collection in several versions. Max Whitby, the director of the company, very kindly donated a complete set to the periodic table table.

To learn more about the set you can visit my page about element collecting for a general description or the company's website which includes many photographs and pricing details. I have two photographs of each sample from the set: One taken by me and one from the company. You can see photographs of all the samples displayed in a periodic table format: my pictures or their pictures. Or you can see both side-by-side with bigger pictures in numerical order.

The picture on the left was taken by me. Here is the company's version (there is some variation between sets, so the pictures sometimes show different variations of the samples):


Source: Max Whitby of RGB
Contributor: Max Whitby of RGB
Acquired: 25 January, 2003
Text Updated: 11 August, 2007
Price: Donated
Size: 0.2"
Purity: 99.8%
Rhodium Longer, thicker wire

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Longer, thicker wire.
I received this sample when Tryggvi and Timothy came to my sodium party.
Source: Tryggvi Emilsson and Timothy Brumleve
Contributor: Tryggvi Emilsson and Timothy Brumleve
Acquired: 21 September, 2002
Price: Donated
Size: 1"
Purity: 99.9%
Rhodium 1cm wire

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1cm wire.
A very small sample indeed, but since it's from David Franco, it is of course of the highest purity.
Source: David Franco
Contributor: Ed Pegg Jr
Acquired: 16 August, 2002
Price: $1
Size: 0.4"
Purity: 99.9%
Rhodium Rhodium plated Ring with Tanzanite

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Rhodium plated Ring with Tanzanite.
Ed got this from eBay. Maybe some day he'll get a solid rhodium ring, but he probably won't donate it to my table.
Source: MrValue Jewelry
Contributor: Ed Pegg Jr
Acquired: 20 July, 2002
Price: $10
Size: 0.75"
Purity: >90%
Rhodium Photo Card Deck of the Elements

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Photo Card Deck of the Elements.
In late 2006 I published a photo periodic table and it's been selling well enough to encourage me to make new products. This one is a particularly neat one: A complete card deck of the elements with one big five-inch (12.7cm) square card for every element. If you like this site and all the pictures on it, you'll love this card deck. And of course if you're wondering what pays for all the pictures and the internet bandwidth to let you look at them, the answer is people buying my posters and cards decks. Hint hint.
Source: Theodore Gray
Contributor: Theodore Gray
Acquired: 19 November, 2008
Text Updated: 21 November, 2008
Price: $35
Size: 5"
Composition: HHeLiBeBCNOFNeNaMg AlSiPSClArKCaScTiVCrMn FeCoNiCuZnGaGeAsSeBrKr RbSrYZrNbMoTcRuRhPdAg CdInSnSbTeIXeCsBaLaCePr NdPmSmEuGdTbDyHoErTm YbLuHfTaWReOsIrPtAuHgTl PbBiPoAtRnFrRaAcThPaUNp PuAmCmBkCfEsFmMdNoLrRf DbSgBhHsMtDsRgUubUutUuq UupUuhUusUuo
The Elements book Mad Science book Periodic Table Poster  Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here!