 |
| Date of Discovery: |
1804 |
| Discoverer: |
Smithson Tenant |
| Name Origin: |
From the Latin word iridis (rainbow) |
| Uses: |
tip gold pens, crucible and special containers |
| Obtained From: |
gravel deposits with platinum |
| Atomic Number: |
77 |
| Atomic Mass: |
192.217amu |
| Melting Point: |
2410.0 °C (2683.15 K, 4370.0 °F)
|
| Boiling Point: |
4527.0 °C (4800.15 K, 8180.6 °F)
|
| Crystal Structure: |
Cubic |
| Density @ 293 K: |
22.5 g/cm3 |
| Color: |
white |
| Isotope |
Ir-188 |
Ir-189 |
Ir-190 |
Ir-190m |
Ir-19m2 |
Ir-191 |
Ir-192 |
Ir-193 |
Ir-193m |
Ir-194 |
Ir-194m |
| Half Life |
1.7 days |
13.2 days |
11.8 days |
1.2 hours |
3.2 hours |
Stable |
73.8 days |
Stable |
10.5 days |
19.3 hours |
170.0 days |
|
