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monatomic |
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| navigate by keyword : helium element chemical periodic table atomic number symbol gas noble mixing lifting colorless greek helios sun monatomic odorless non reactive block period group inert deep diving laser cryogenics balloon inhaling airship zeppelin welding mri magnets chemistry name substance tabular display system inorganic grid raster chart education research scientific science vector |
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| Helium element on periodic table. Chemical element with atomic number 2 and symbol He, from Greek helios for sun. Inert, monatomic, noble gas, 2nd most abundant in the universe after hydrogen. Vector |
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Stockphotos.ro (c) 2026. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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