- a silvery-white metallic element of the platinum family, forming salts that give rose-colored solutions: used to electroplate microscopes and instrument parts to prevent corrosion. Symbol: Rh; atomic weight: 102.905; atomic number: 45; specific gravity: 12.5 at 20°C.
Origin of rhodium
Examples from the Web for rhodium
It will likely surpass that level in 2013, according to Rhodium Group, which does detailed tracking of Chinese investment.Forget the Headlines: Chinese Buying Big in US
May 22, 2013
If you add more oil of rhodium, it will produce a rose perfume.Directions for Cookery, in its Various Branches
The oil of rhodium, is extracted from the wood of the convolvolus scoparius.
According to Wollaston, the specific gravity of rhodium is 11.
The addition of a little oil of Rhodium will tempt them to eat.Mrs. Hale's Receipts for the Million
Sarah Josepha Hale
Oil of anise or rhodium is sometimes used for the same purpose.Coyotes in Their Economic Relations
David E. Lantz
- a hard corrosion-resistant silvery-white element of the platinum metal group, occurring free with other platinum metals in alluvial deposits and in nickel ores. It is used as an alloying agent to harden platinum and palladium. Symbol: Rh; atomic no: 45; atomic wt: 102.90550; valency: 2–6; relative density: 12.41; melting pt: 1963±3°C; boiling pt: 3697±100°C
Word Origin and History for rhodium
hard white metallic element, 1804, Modern Latin, coined by its discoverer, English physician William H. Wollaston (1766-1828), and named for the color of solutions containing it, from Greek rhodon "rose" (see rose (n.1)) + metallic element ending -ium.
- A hard durable metallic element. Atomic number 45.
- A rare, silvery-white metallic element that is hard, durable, and resistant to acids. It is used as a permanent plating for jewelry and is added to platinum to make high-temperature alloys. Atomic number 45; atomic weight 102.905; melting point 1,966°C; boiling point 3,727°C; specific gravity 12.41; valence 2, 3, 4, 5, 6. See Periodic Table.