Ir

Iridium

Z 77 192.217 g/molTransition Metal

Overview Atomic Properties Thermodynamics Electromagnetism Isotopes

Group

9

Period

6

Block

d

Occurrence

Merging neutron stars 99%Dying low-mass stars 1%Geochemical class: Siderophile

Biological Role

---

History

1803 (discovery, isolation)

Smithson Tennant

Named By

Smithson Tennant

Latin Name

Iridium

Abundance

Solar System

x

Sun

x

Meteorites

x

Earth's crust

x

Oceans

x

Humans

x