Rhodium
Latin name | Rhodium |
English name | Rhodium |
chemical symbol | Rh |
atomic number | 45 |
relative atomic mass | 102,9055 |
period | 5 |
group | VIII.B |
classification | transition metals |
discovery year | 1803 |
discoverer | W. H. Wollaston |
melting point [°C] | 1966 |
boiling point [°C] | ˜3900 |
density [g cm-3] | 12,42 |
density at melting point [g cm-3] | 10,7 |
electronegativity [Pauling] | 2,28 |
stand. el. potential [V] | +0,76 |
oxidation states | I ˜ V |
electron configuration | [Kr]4d8 5s1 |
atomic radius [pm] | 173 |
covalent radius [pm] | 135 |
specific heat [J g-1K-1] | 0,24 |
heat of fusion [kJ mol-1] | 21,5 |
thermal conductivity [W m-1 K-1] | 150 |
el. conductivity [S m-1] | 2,3.107 |
1. ionizing potential [eV] | 7,4589 |
2. ionizing potential [eV] | 18,08 |
3. ionizing potential [eV] | 31,06 |
Mohs hardness | 6 |
Vickers hardness [MPa] | 1246 |
Brinell hardness [MPa] | 1100 |
shear modulus [GPa] | 150 |
Young's modulus [GPa] | 275 |
state at normal conditions | solid |
Resources
- BARTHELMY, David. Mineral Species containing Rhodium. In: Mineralogy database [online]. 2010 [cit. 2012-06-20]. Available from: http://webmineral.com/chem/Chem-Rh.shtml
- GINZBURG, Susanna. Analitičeskaja chimija platinovych metallov. Moskva: Nauka, 1972.
- HARRINGTON, Peter. Transition Metals in Total Synthesis. New York : John Wiley & Sons, 1990. ISBN 0-471-61300-2.
- LIVINGSTONE, Stanley. Chimija rutenija, rodija, palladija, osmija, iridija, platiny. Moskva: Mir, 1978.
- MELLOR, Joseph. Comprehensive Treatise on Inorganic and Theoretical Chemistry. Vol. 15. Londýn: Longmans, Green & Co., 1936.
- STWERTKA, Albert. A Guide to the Elements. Oxford: University Press, 2002. ISBN 0-19-515027-9.
ruthenium ← rhodium → palladium