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44 - Ruthenium transition metal

Discovered by Karl Ernst Claus in 1844

Ruthenium

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.
Shell Electrons Orbitals
1 2 2 in 1s
2 8 2 in 2s + 6 in 2p
3 18 2 in 3s + 6 in 3p + 10 in 3d
4 15 2 in 4s + 6 in 4p + 7 in 4d
5 1 1 in 5s
RutheniumRu Electron 1 Electron 2 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 9 Electron 10 Electron 11 Electron 12 Electron 13 Electron 14 Electron 15 Electron 16 Electron 17 Electron 18 Electron 1 Electron 2 Electron 3 Electron 4 Electron 5 Electron 6 Electron 7 Electron 8 Electron 9 Electron 10 Electron 11 Electron 12 Electron 13 Electron 14 Electron 15 Electron 1
101.07  u Atomic Mass
1.9  Å Atomic Radius
4423  K Boiling Point
1.46  Å Covalent Radius
12.45  g/cm³ Density
100.96 Electron Affinity
2.2 Electronegativity
7.36  eV First Ionization Energy
2523.15  K Melting Point
5 Number of Shells
44 Atomic Number
2, 8, 18, 15, 1 Electron Shell Occupations