Frequently Asked Questions about Iridium
What is the atomic number of iridium?
Iridium has an atomic number of 77, meaning each atom contains 77 protons in its nucleus.
What is the atomic mass of iridium?
The standard atomic weight of iridium is 192.22 u (unified atomic mass units).
What category does iridium belong to?
Iridium is classified as a transition metal.
What is the state of iridium at room temperature?
Iridium is a solid at 20 °C (68 °F).
What is the melting point of iridium?
The melting point of iridium is 2445.85 °C / 2719 K.
What is the boiling point of iridium?
The boiling point of iridium is 4427.85 °C / 4701 K.
What is the density of iridium?
The density of iridium is 22.56 g/cm³ (20°C).
What is the electronegativity of iridium?
Iridium has a Pauling electronegativity of 2.2.
What is the electron configuration of iridium?
The electron configuration of iridium is [Xe] 4f14 5d7 6s2.
What are the common oxidation states of iridium?
Iridium commonly exhibits the following oxidation states: +3, +4.
When was iridium discovered?
Iridium was discovered in 1803 by Smithson Tennant.
Is iridium radioactive?
Iridium is a stable element with no naturally occurring radioactive isotopes.
What is the biological role of iridium?
No known biological role.
What are the common uses of iridium?
Iridium is used for: Spark plugs; Electronics; Crucibles.
