1 Facts
1.1 Interesting Facts
- Osmium metal does not oxidize in air unless it is heated.
- But if it heated den it forms Osmium Tetroxide, which is highly toxic.
- Hafnium metal is highly reactive, hence not found free in nature.
- Hafnium metal as predicated after Mendeleev finished his periodic table.
1.2 Sources
Found As a By-product, Found in Minerals, Mining
By-product Zirconium Refining
1.3 History
1.3.1 Who Discovered
Smithson Tennant
Dirk Coster and George de Hevesy
1.3.2 Discovery
1.4 Abundance
1.4.1 Abundance In Universe
3 * 10-7 %7 * 10-8 %
5E-09
0.11
2.1.1 Abundance In Sun
~0.0000002 %~0.0000001 %
1E-08
0.1
2.2.1 Abundance In Meteorites
2.4.2 Abundance In Earth's Crust
2.4.4 Abundance In Oceans
2.4.6 Abundance In Humans