platinum group elements
1platinum group — ▪ chemical element group Introduction six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and …
2Platinum group — The platinum group (alternatively, the platinum group metals or platinum metals) is a collective name sometimes used for six metallic elements clustered together in the periodic table. These elements are all transition metals, lying in the d… …
3platinum group — noun In chemistry a group of elements with related properties similar to that of platinum. Notably high resistance to chemical activity, particularly oxidation and reaction with acids. The platinum group consists of the elements ruthenium,… …
4platinum group — A group of six amphoteric elements: iridium, osmium, palladium, platinum, rhodium, and ruthenium …
5Platinum in Africa — Platinum, and platinum group metals, in Africa, are produced in Zimbabwe and the Republic of South Africa. Of the multitudes of companies involved in producing platinum group metals in these two countries, these are the principal… …
6Group 10 element — Group 10 redirects here. For the rugby league competition, see Group 10 Rugby League. Group → 4 ↓ Period 4 …
7Group 9 element — Group → 4 ↓ Period 4 27 Co 5 …
8Platinum — Plat i*num, n. [NL., fr. Sp. platina, from plata silver, LL. plata a thin plate of metal. See {Plate}, and cf. {Platina}.] (Chem.) A metallic element of atomic number 78, one of the noble metals, classed with silver and gold as a precious metal,… …
9Platinum black — Platinum Plat i*num, n. [NL., fr. Sp. platina, from plata silver, LL. plata a thin plate of metal. See {Plate}, and cf. {Platina}.] (Chem.) A metallic element of atomic number 78, one of the noble metals, classed with silver and gold as a… …
10Platinum lamp — Platinum Plat i*num, n. [NL., fr. Sp. platina, from plata silver, LL. plata a thin plate of metal. See {Plate}, and cf. {Platina}.] (Chem.) A metallic element of atomic number 78, one of the noble metals, classed with silver and gold as a… …
