hydrogen periodic table element |
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| navigate by keyword : helium science education laboratory element periodic scientific icon vector table symbol atom atomic mass weight number lab mendeleev physics school chemistry chemical material structure electron molecule molecular name technology colorless odorless noble gas nonreactive light balloon cooling mri rounded black white |
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| Helium, He, periodic table element with name, symbol, atomic number and weight. Inert gas with various industrial uses, such as in cryogenics, welding, and as a lifting gas in balloons and airships. |
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