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What is the lightest element on the periodic table?
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What is the lightest element on the periodic table?

User Goryef
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The lightest element on the periodic table is hydrogen

User GrandFleet
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Note that while hydrogen is normally shown at the top of the Group 1 elements in the periodic table, the term "alkaline metal" refers to the Group 1 elements from lithium downwards and not hydrogen. Hydrogen is the lightest element.
User Yogesh Manware
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