| 11. | This same trend appears for ruthenium but not osmium.
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| 12. | The most common compound exhibiting the + 8 oxidation state is osmium tetroxide.
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| 13. | Osmium powder has the characteristic smell of osmium tetroxide.
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| 14. | Osmium powder has the characteristic smell of osmium tetroxide.
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| 15. | Nowadays osmium is obtained primarily from the processing of platinum and nickel ores.
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| 16. | Like palladium, powdered osmium effectively absorbs hydrogen atoms.
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| 17. | The cells are black as a result of the effects of osmium tetroxide.
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| 18. | Rhenium prefers to enter sulfides more readily than osmium.
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| 19. | Tennant ended up discovering the elements iridium and osmium.
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| 20. | Platina is a native alloy of platinum with osmium and other related metals.
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