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10203040506070809010011000.511.522.53‌ Å

44 - Ruthenium transition metal

Atomic Mass (u)

101.07

Density (g/cm³)

12.45

Phase

Solid

Year of Discovery

1844
RutheniumRuElectron 1Electron 2Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 9Electron 10Electron 11Electron 12Electron 13Electron 14Electron 15Electron 16Electron 17Electron 18Electron 1Electron 2Electron 3Electron 4Electron 5Electron 6Electron 7Electron 8Electron 9Electron 10Electron 11Electron 12Electron 13Electron 14Electron 15Electron 1

Ruthenium is a chemical element with symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the other metals of the platinum group, ruthenium is inert to most other chemicals.

44 Atomic Number
101.07  u Atomic Mass
2523.15  K Melting Point
4423  K Boiling Point
12.45  g/cm³ Density
1.9  Å Atomic Radius
1.46  Å Covalent Radius
2.2 Electronegativity
7.36  eV First Ionization Energy
100.96 Electron Affinity
5 Number of Shells
2, 8, 18, 15, 1 Electron Shell Occupations
0.24  J/g Specific Heat