Iridium (Ir)
A fascinating transition metal element.
Iridium is element 77 on the periodic table.
Element properties
- Atomic number
- 77
- Symbol
- Ir
- Atomic mass
- 192.22 u
- Category
- Transition Metal
- Period
- 6
- Group
- 9
- Block
- d
- State
- Solid
- Electron configuration
- [Xe] 4f14 5d7 6s2
- Electronegativity (Pauling)
- 2.2
- Density
- 22.56 g/cm³
- Melting point
- 2446 °C
- Boiling point
- 4428 °C