Iridium is a chemical element with the symbol Ir and atomic number 77. It is a dense, silvery-white transition metal that belongs to the platinum group of elements. It is considered one of the rarest elements on Earth and is the second-densest element after osmium.
Basic Elemental Properties of Iridium
Some of the basic elemental properties of iridium are as follows:
Atomic Symbol of Iridium
The atomic symbol of Iridium is “Ir”.
Atomic Number of Iridium
Iridium has an atomic number of 77, which indicates the number of protons present in the nucleus of its atom.
Electronic Configuration of Iridium
The electronic configuration of iridium is [Xe] 4f14 5d7 6s2.
Block of Iridium in Periodic Table
Iridium belongs to the d-block in the periodic table, which is also known as the transition metal block.
Group of Iridium in Periodic Table
Iridium belongs to group 9 in the periodic table, which is one of the transition metal groups.
Period of Iridium in Periodic Table
Iridium is placed in the sixth period of the periodic table, which signifies that it has six energy levels.
Atomic Mass of Iridium
The atomic mass of iridium is 192.217 u.
Thermodynamic Properties of Iridium
Some of the important thermodynamic properties of Iridium are as follows:
Melting Point of Iridium
The melting point of iridium is 2,447 °C, which makes it one of the metals with the highest melting points.
Boiling Point of Iridium
The boiling point of iridium is 4,427 °C, which is also one of the highest among all the elements.
Specific Heat Capacity of Iridium
The specific heat capacity of iridium at room temperature is 0.131 J/g·K.
Heat of Fusion of Iridium
The heat of fusion of iridium is 26.10 kJ/mol.
Heat of Vaporization of Iridium
The heat of vaporization of iridium is 607.6 kJ/mol.
Material Properties of Iridium
Some of the material properties of iridium are as follows:
Density of Iridium
The density of iridium is 22.56 g/cm³, which is very high.
Mohs Hardness of Iridium
The Mohs hardness of iridium is 6.5.
Young's Modulus of Iridium
The Young's modulus of iridium is 528 GPa.
Shear Modulus of Iridium
The shear modulus of iridium is 210 GPa.
Bulk Modulus of Iridium
The bulk modulus of iridium is 320 GPa.
Poisson's Ratio of Iridium
The Poisson's ratio of iridium is 0.26.
Electromagnetic Properties of Iridium
Iridium has several electromagnetic properties, some of which are as follows:
Magnetic Type of Iridium
Iridium is not magnetic.
Electrical Conductivity of Iridium
The electrical conductivity of iridium is 22.6 MS/m.
Thermal Conductivity of Iridium
The thermal conductivity of iridium is 147 W/(m·K).
Reflectivity of Iridium
Iridium is highly reflective and has the highest reflectivity of all the metals. It is used in making mirrors and other reflective coatings.