In detail

Ruthenium (Ru) properties


Atomic mass, symbol and atomic number

ruthenium is a naturally occurring element with the element symbol Ru and atomic number 44. In the periodic table it stands with an atomic mass of 101.07 u u in the 8th subgroup. The chemical element discovered by Karl Ernst Claus in 1844 is not radioactive and is in a solid state of aggregation at room temperature.

Profile: Ruthenium (English Ruthenium)

General
Chemical element:ruthenium
Symbol:Ru
Atomic number:44
Group:iron group
Period:5
Block:d-block
Series:Transition metals
Appearance:colorless
explorers:Karl Ernst Claus
Year of discovery:1844
Atomic properties
Atomic mass:101.07 and
Atomic radius:130 pm
Covalent radius:146 pm
Van der Waals radius:202 pm
Electron configuration:Kr 4d7 5s1
ionization:710.2 kJ / mol
Physical Properties
Physical state:firmly
Density:12.37 g / cm3
Crystal structure:hexagonal
Magnetism:paramagnetic
molar volume:8,17 · 10-6 m3/ mol
Mohs hardness:6,5
Melting point:2334 ° C
Boiling point:4150 ° C
Heat of fusion:25.7 kJ / mol
Heat of vaporization:619 k / mol
Thermal conductivity:120 W
Chemical properties
electronegativity:2,2

Did you know that ...

  • the chemical element owes its name to the localities in Russia (Latin Ruthenia = Russia)?
  • every year only about 10 tons of ruthenium are extracted?
  • Ruthenium is added to other metals because of its good electrical conductivity?