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Sources, facts, uses, scarcity (sri), podcasts, alchemical symbols, videos and images. Atomic number of helium is 2. It has symbol he and atomic number 2.

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'sun') is a chemical element; Atomic weight of helium is 4.002602 u or g/mol. Number of protons in helium is 2.

Chemical symbol for helium is he.

Helium is a chemical element with symbol he and atomic number 2. Helium is a chemical element of the periodic table with chemical symbol he and atomic number 2 with an atomic weight of 4.0026 u and is classed as a noble gas. Helium is a chemical element with the symbol he and atomic number 2. Helium (he) helium is the 2nd element in the periodic table and has a symbol of he and atomic number of 2.

For more information about citing online sources, please visit the mla's website. Classified as a noble gas, helium is a gas at 25°c (room temperature). It has an atomic weight of 4.00260 and a mass number of 4. Chemical properties of the element:

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Includes the atomic number, atomic weight, crystal structure, melting point, boiling point, atomic radius, covalent radius, and more.

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