Helium
Emergence definition
Helium is a rare, non-reactive gas with the symbol He and atomic number 2, characterized by its unique properties and applications.
Wiktionary senses
Historical origin
Prerequisite chain
Neighborhood
In other languages
Prerequisites
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helium requires understanding matter as a foundational concept
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Chemical element with symbol He and atomic number 2; rare gas.
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Chemical element with symbol He and atomic number 2.
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Chemical element with symbol He and atomic number 2; rare gas.