Rhodium Powder has a corrosion resistance, even higher in boiling aqua regia. Only the atomic number 1 brominate slimly rusts atomic number 45.as well wet iodine and sodium hypochlorite can corrode it. Rhodium was discovered in 1803 by W.H. Woolaston in London. Rhodium powder can follow habituated when raw materials of electrical instrumentates, chemical engine room and fabricating precision alloy and so on.
Rhodium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.
The metal has high thermal and electrical conductivities and costs blended with atomic number 78 to descriptor the irrefutable wire of a Pt/releasing factor - Pt thermocouple junction. Former applications of the corporal include its economic consumption every bit a plating fabric (to provide a hard and bright surface which follows nonabsorbent to oxidation), as a catalyst and also when an alloying constituent, where it improves the hardness of the resulting alloy.
Rhodium is a Block D, Group 9, Period 5 element. The number of electrons in each of Rhodium's shells is 2, 8, 18, 16, 1 and its electronic configuration is [Kr] 4d8 5s1. In its elemental form rhodium's CAS number is 7440-16-6. The rhodium atom has a radius of 134.5.pm and it's Van der Waals radius is 200.pm. Rhodium is not toxic.
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