The platinum group metals (abbreviated as the PGMs; alternatively, the platinoids, platidises, platinum group, platinum metals, platinum family or platinum group elements (PGEs)) is a term used sometimes to collectively refer to six metallic elements clustered together in the periodic table. These elements are all transition metals, lying in the d-block (groups 8, 9, and 10, periods 5 and 6).
The six platinum group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum. They have similar physical and chemical properties, and tend to occur together in the same mineral deposits. However they can be further subdivided into the iridium-group platinum group elements (IPGEs: Os, Ir, Ru) and the palladium-group platinum group elements (PPGEs: Rh, Pt, Pd) based on their behaviour in geological systems.
Read more about Platinum Group: History, Properties, Production, Production in Nuclear Reactors
Famous quotes containing the words platinum and/or group:
“Flouncing your skirts, you blueness of joy, you flirt of
politeness,
You leap, you intelligence, essence of wheelness with silvery nose,
And your platinum clocks of excitement stir like the hairs of a
fern.”
—Karl Shapiro (b. 1913)
“He hung out of the window a long while looking up and down the street. The world’s second metropolis. In the brick houses and the dingy lamplight and the voices of a group of boys kidding and quarreling on the steps of a house opposite, in the regular firm tread of a policeman, he felt a marching like soldiers, like a sidewheeler going up the Hudson under the Palisades, like an election parade, through long streets towards something tall white full of colonnades and stately. Metropolis.”
—John Dos Passos (1896–1970)