Iridium
Iridium (Ir) is a chemical element belonging to the category transition metal, with atomic number 77 and standard atomic mass 192.2200 u. This sheet describes its fundamental properties, periodic position and physical characteristics.
Identity
- Name: Iridium
- Symbol: Ir
- Atomic number: 77
- Atomic mass: 192.2200 u
Position in the periodic table
- Group: 9
- Period: 6
- Category: Transition metal (platinum group)
Physico-chemical properties
- Standard state: Solid
- Melting point: 2446°C
- Density: 22.56 g/cm³ (20°C)
- Electron configuration: [Xe] 4f¹⁴ 5d⁷ 6s²
Scientific description
Iridium is a chemical element with symbol Ir and atomic number 77. It is a very dense, corrosion-resistant transition metal of the platinum group, occupying group 9 and period 6 of the periodic table. Its standard atomic mass is approximately 192.2200 u and its density is among the highest of all known elements.
KODO: O5