RhodiumThis is a featured page


My Nucleus

Atomic number :45

Atomic weight: 102.91

Symbol: Rh

Neutrons: 58

Protons: 45

Group: 9

Period: 5

Series: transistion metals
My Electrons

Rhodium - Chemistry with Mr. Olson

Valence electrons: 4d8 5s1

Electrons: 45

Electron configuration: 1s2 2s2p6 3s2p6d10 4s2p6d8 5s1

Electrons per energy level: 2,8,18,16,1
My Properties
Boiling point: 4000 K
(3727°C or 6741°F)

Melting point: 2239 K
( 1966°C or 3571°F)

    Description: Hard silver white metal that is unaffected by air and water up to 875K. It is also unaffected by acids but is attacked by multen alkalis.

    Atomic mass: 102.9055

    Density: 12.41g/cc @ 300K
    My Home
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    Abundances, ppb by weight ppb by atom
    I am Rhodium


    picture of rhodium
    My Compounds
    (My Friends!)
    Rhodium - Chemistry with Mr. Olson
    Rhodium - Chemistry with Mr. Olson

    My history

    Rhodium - Chemistry with Mr. Olson

    Rhodium was discovered in 1803 by William Hyde wollaston soon after his discovery of palladium Wollaston made this discovery in England using crude platinum that he presumably obtained from South America. The orgin of Rhodium is Greek. which is rhodon (rose). Its salts give a rosy solution.Wollaston chose the name rhodium (from the Greek rhodon, that means rose) due to the color of the chloride RhCl3 and of the respective aqueous solution
    My Jobs

    Rhodium is used as a coating to prevent wear on high quality science equipment and with platinum to make thermocouples. Also used in headlight reflectors, thelephone relays, fountain pen points and airplane spark plugs. Other jobs that rhodium does is of the following:

    • alloying agent to harden platinum and palladium. Such alloys are used for furnace windings, thermocouple elements, bushings for glass fibre production, electrodes for aircraft spark plugs, and laboratory crucibles
    • used as an electrical contact material as it has a low electrical resistance, a low and stable contact resistance, and is highly resistant to corrosion
    • plated rhodium produced by electroplating or evaporation is exceptionally hard and is used for optical instruments
    • used for jewelery
    • industrial catalyst
    • rhodium is used as part of the catalytic system in car catalytic converters, used to clean up exhaust gases to some extent


    In compounds of rhodium , the most common oxidation numbers of rhodium are: 3. For each compound, a formal oxidation number for rhodium is given, but the usefulness of this number is limited for p-block elements in particular. The term hydride is used in a generic sense to indicate compounds of the type MxHy
    Rhodium - Chemistry with Mr. Olson


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    Dionalee     		Latest page update: made by Dionalee , Oct 21 2006, 9:29 PM EDT (about this update About This Update Dionalee Edited by Dionalee

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    Anonymous multen alkali 0 Apr 29 2009, 12:38 PM EDT by Anonymous
     
    Thread started: Apr 29 2009, 12:38 PM EDT  Watch
    is multen as used here, the same as molten in the US dictionaries? If so, could you explain what multen alkali is?
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