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Home > Rhodium


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rutheniumrhodiumpalladium
Co

Rh
Ir 
 

General
Name, Symbol, Number rhodium, Rh, 45
Chemical series Transition metals
Group, Period, Block 9, 5 , dThe d-block of the periodic table of elements consists of those periodic table groups that contain elements in which, in the atomic ground state, the highest-energy electron is in a d- orbital. The d-block elements are often also known as transition metal
DensityFor other meanings of density, see density (disambiguation Density (symbol: rho Greek: rho) is a measure of mass per unit of volume. The higher an object's density, the higher its mass per volume. The average density of an object equals its total mass div, Hardness 12450 kg/m3Kilogram per cubic metre is the SI measure of density and is represented as kg/m³, where kg stands for kilogram and m³ stands for cubic metre. The density of water is about 1000 kg/m³, since a cubic metre of water weighs about a tonne. kg/m³" is sometimes, 6
AppearanceFor alternative meanings, see color (disambiguation). visual arts. Color (or colour is a sensation which (in humans) derives from the ability of the fine structure of the eye to distinguish three differently filtered analyses of a view. The perception of Silvery white metallic
Atomic properties
Atomic weightIn reference to a certain isotope of a chemical element, atomic weight (more accurately relative atomic mass though also called simply atomic mass is the mass of one atom of the isotope expressed in units atomic mass unit amu) such that the Carbon-12 isot 102.90550 uTo help compare different orders of magnitude we list here masses between 60. 22 amu and 602. 2 amu (10-25 kg and 10-24 kg). See also masses of other orders of magnitude. lighter masses 91. 224 amu atomic mass of zirconium 92. 90638 amu atomic mass of nio
Atomic radiusAtomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in a atom that is at equilibrium and is measured in picometers or Angstroms. Atomic radii are called covalent radii (a reference to the types of bonds formed) whe (calc.) 135 (173) pm
Covalent radius 135 pm
van der Waals radius no data
Electron configuration [ Kr]4d8 5 s1
e- 's per energy level 2, 8, 18, 16, 1
Oxidation states ( Oxide) 2, 3, 4 ( amphoteric)
Crystal structure Face centered cubic
Physical properties
State of matter Solid ( __)
Melting point 2237 K (3567 ° F)
Boiling point 3968 K (6683 °F)
Molar volume 8.28 ×10-6 m3/mol
Heat of vaporization 493 kJ/mol
Heat of fusion 21.5 kJ/mol
Vapor pressure 0.633 Pa at 2239 K
Speed of sound 4700 m/s at 293.15 K
Miscellaneous
Electronegativity 2.28 ( Pauling scale)
Specific heat capacity 0.242 J/(kg*K)
Electrical conductivity 21.1 106/(m· ohm)
Thermal conductivity 150 W/(m*K)
1st ionization potential 719.7 kJ/mol
2nd ionization potential 1740 kJ/mol
3rd ionization potential 2997 kJ/mol
Most stable isotopes
iso NA half-life DM DE M eV DP
101Rh {syn.} 3.3 y ε 0.542 101 Ru
102Rh m {syn.} ~2.9 y ε
IT
2.464
0.141
102Ru
 
103Rh 100% Rh is stable with 58 neutrons
SI units & STP are used except where noted.

Rhodium is a chemical element in the periodic table that has the symbol Rh and atomic number 45. A rare silvery-white hard transition metal, rhodium is a member of the platinum group, is found in platinum ores and is used in alloys with platinum and as a catalyst.



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