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Helium on the periodic table of the elements. Chemical element with atomic number 2 and symbol He, from the Greek word helios for sun. Inert, monatomic, noble gas, used for lasers and other purposes.
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Helium vector illustration. Chemical gas substance characteristics and uses. Atom model and everyday application example. Funny high voice after inhalation explanation. Observable universe ingredient.
Ions vector illustration. Labeled chemical molecule electric charge scheme. Diagram with neutral atom, positive cation and negative anion with loss of electron. Educational particle infographic.
Neon on the periodic table of the elements, with symbol Ne from Greek word neos, with atomic number 10. Noble gas, gives a distinct reddish-orange glow. Used in neon glow lamps and advertising signs.