Name: Osmium
Symbol: Os
Atomic Number: 76
Atomic Mass: 190.23 amu
Melting Point: 3045.0 °C (3318.15 °K, 5513.0 °F)
Boiling Point: 5027.0 °C (5300.15 °K, 9080.6 °F)
Number of Protons/Electrons: 76
Number of Neutrons: 114
Crystal Structure: Hexagonal
Density @ 293 K: 22.4 g/cm3
Color: silvery
Atomic Structure
![[Bohr Model of Osmium]](b0076.gif) |
Number of Energy Levels: 6 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 18 Fourth Energy Level: 32 Fifth Energy Level: 14 Sixth Energy Level: 2 |
Isotopes
| Isotope | Half Life |
| Os-184 | Stable |
| Os-185 | 93.6 days |
| Os-186 | 2.0E15 years |
| Os-187 | Stable |
| Os-188 | Stable |
| Os-189 | Stable |
| Os-190 | Stable |
| Os-190m | 9.9 minutes |
| Os-191 | 15.4 days |
| Os-191m | 13.1 hours |
| Os-192 | Stable |
| Os-193 | 30.5 hours |
| Os-194 | 6.0 years |
Facts
Date of Discovery: 1803
Discoverer: Smithson Tenant
Name Origin: From the Greek word osmë (odor)
Uses: tip gold pen points, instrument pivots, electrical light filaments
Obtained From: ores that contain platinum
Information provided by: http://www.chemicalelements.com