Osmium is a chemical element with symbol Os and atomic number 76. It is a very dense, hard, blue-gray metal notable for its high density and rarity. In scientific contexts it is discussed in chemistry, materials science, and metallurgy, often alongside platinum-group metals.
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1:00Manganese
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1:01Meitnerium
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0:58Mercury
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0:59Molecule
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1:00Molybdenum
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1:02Neodymium
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0:55Neon
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0:54Nickel
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0:59Nitrogen
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0:57Osmium
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