IRIDIUM

Iridium was discovered in 1803, by English chemist Smithson Tennant in London. He found it in the residue left when crude platinum had been dissolved in aqua regia (a mixture of hydrochloric acid and nitric acid).

COOL FACTS

• Atomic weight:192.217kg
• Melting point: 4,435 F
• Boiling point: 8,002.4 F
• Iridium is very brittle, but can be worked if heated
• Symbol: Ir

COOL FACTS cont.

• The name iridium is derived from a Latin word
• Iridium means iris rainbow
• Iridium has a white color just like platinum
• Iridium can be used to conduct heat and electricity
• Group:9
• Atomic number: 77

Iridium is used for many things including pen tips, strengthening platinum, making compass bearings, and making heavy duty electrical contacts

For more information go to:
https://m.youtube.com/watch?v=cuovE4OQi2g

SOURCES

• Chemicool.com
• Livescience.com
• Lookchem.com