Rhodium Element Properties

Rhodium

d44
Ru
Ruthenium
d45
Rh
Rhodium
d46
Pd
Palladium
General
Name(Rhodium)
Symbol(Rh)
Number(45)
Group Number(9)
Group(Transition metals)
Block(d)
Density(12.4 g/cm3)
Atomic Weight(102.9055 g/mol)
Atomic Volume(8.3 cm3/mol)
Discover(1803)


States
State(Solid)
Melting Point(2237 K)
Boiling Point(3968 K)
Triple Point(Nil)
Critical Point(Nil)
Heat of Fusion(26.59 kJ/mol)
Heat of Vaporization(494 kJ/mol)


Energies
First Ionization Energy(719.8 kJ/mole)
Second Ionization Energy(1744.4 kJ/mole)
Third Ionization Energy(2996.8 kJ/mole)
Electronegativity(2.28)
Electron Affinity(109.7 kJ/mole)
Specific Heat(0.242 J/gK)
Heat Atomization(556 kJ/mole atoms)


Oxidation and Electrons
Shells(2,8,18,16,1)
Electron Configuration([Kr] 4d8 5s1)
Minimum Oxidation Number(-1)
Maximum Oxidation Number(6)
Minimum Common Oxidation Number(0)
Maximum Common Oxidation Number(3)


Appearance and Characteristics
Crystal Structure(cubic face centered)
Characteristics(forms hard coatings)
Color(silvery-white)
Uses(catalysts, elec. contacts)
Hardness(mohs)
Toxicity(None)


Reactions
Reaction with Air(none, w/ht =>Rh2O3)
Reaction with 6M HCl(None)
Reaction with 15M HNO3(None)
Reaction with 6M NaOH(None)


Other Forms
Number of Isotopes(1)
Hydride(None)
Oxide(Rh2O3 RhO2)
Chloride(RhCl3)


Radius
Atomic Radius(134 pm)
Ionic Radius (1+ ion)(Nil)
Ionic Radius (1- ion)(Nil)
Ionic Radius (2+ ion)(Nil)
Ionic Radius (2- ion)(Nil)
Ionic Radius (3+ ion)(80.5 pm)


Conductivity
Thermal Conductivity(150 J/m-sec-deg)
Electrical Conductivity(221.729 1/mohm-cm)
Polarizability(8.6 A3)


Abundance
Source(nickel ores (sulfides))
Relation Abundance Solar System(-0.463 log)
Abundance Earths Crust(-3 log)


d44
Ru
Ruthenium
d45
Rh
Rhodium
d46
Pd
Palladium

english Calculators and Converters


Sitemap