44 Ru
Transition metal
Ruthenium
Used in electrical contacts.
Properties of Ruthenium
- Atomic number (Z)
- 44
- Symbol
- Ru
- Atomic mass
- 101.07 g/mol
- Category
- Transition metal
- Group
- 8
- Period
- 5
- Electron configuration
- [Kr] 4d⁷ 5s¹
- Electronegativity (Pauling)
- 2.2
- Atomic radius
- 178 pm
- First ionization energy
- 710 kJ/mol
- Melting point
- 2607 K (2333.8 °C)
- Boiling point
- 4423 K (4149.9 °C)
- Density
- 12.37 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1844
Frequently asked questions
What is Ruthenium?
Ruthenium (Ru) is a transition metal, element number 44 on the periodic table. Used in electrical contacts.
What is the atomic number and atomic mass of Ruthenium?
Ruthenium has atomic number 44 and an atomic mass of about 101.07 g/mol.
What is the electron configuration of Ruthenium?
The electron configuration of Ruthenium is [Kr] 4d⁷ 5s¹.
Where is Ruthenium on the periodic table?
Ruthenium sits in group 8, period 5, and is classified as a transition metal.