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Helium (he) 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 noble gas and is part of. It has symbol he and atomic number 2. Sources, facts, uses, scarcity (sri), podcasts, alchemical symbols, videos and images.
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Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. Atomic weight of helium is 4.002602 u or g/mol. It has an atomic weight of 4.00260 and a mass number of 4.
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Chemical symbol for helium is he.
Atomic number of helium is 2. 'sun') is a chemical element; 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.
Seven isotopes of helium are known: The chemical symbol for helium is he. Number of protons in helium is 2.
