The Periodic Table/77 - Iridium (Ir)

Element Iridium (Ir, 77)

Here you can read more about the chemical element Iridium. Its shemical symbol is Ir and its atomic number is 77. The relative atomic mass of Iridium is 192.217 u. The elemental classification of Iridium is Transition metals, and it belongs to group 9 and period 6 in the Periodic Table of Elements.

The density of Iridium is 22420 kg/m3. And the mineral hardness of Iridium is 6.5 Mohs. The melting point of Iridium is 2680 Kelvin (2407 ℃). The boiling point of Iridium is 4400 Kelvin (4127 ℃). Iridium was discovered in the year 1803 by Smithson Tennant.

To the right (or below if you are using a mobile device with a smaller screen) you will find the information given above for the element Iridium ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.

Data about element Iridium

Chemical symbol
Element classification
Transition metals
Atomic number
Relativ atomic mass
Atomic mass
192.217 u
22420 kg/m3
Melting point
2680 K   (2407 ℃)
Boiling point
4400 K   (4127 ℃)
Mineral hardness
6.5 Mohs
Discovered year
Discovered by
Smithson Tennant