Osmium (Os)
Element number 76, from the transition metals family.
Osmium facts
- Symbol
- Os
- Atomic number
- 76
- Atomic mass
- 190.23
- Family
- Transition metals
- Period
- 6
- Group
- 8
Famous reactions with osmium
- Sneaky and dangerous! Osmium meets OxygenOsmium tetroxide Os + 2O₂ → OsO₄ · Slowly in air, faster when heated · Try it
What does osmium react with?
Osmium makes a new substance with 3 other elements and chemicals in our lab:
- Osmium + FluorineOsmium(VI) fluoride Os + 3F₂ → OsF₆ · At room temperature · Try it
- Osmium + SulfurOsmium(IV) sulfide Os + 2S → OsS₂ · When heated · Try it
- Osmium + ChlorineOsmium(IV) chloride Os + 2Cl₂ → OsCl₄ · When heated · Try it
It also blends into a mixture, like an alloy, with 73 other metals when melted together.
Nothing happens when it's simply mixed with 21 of the others. 21 pairings have never been tried, because not enough atoms have ever existed.