Its abundance is similar to this in both the Sun and Jupiter, because of the very high nuclear binding energy (per nucleon) of helium-4, with respect to the next three elements after helium. It is present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined. It is the second-lightest and second most abundant element in the observable universe, after hydrogen. Its boiling point is the lowest among all the elements, and it does not have a melting point at standard pressure. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table. ![]() Helium (from Greek: ἥλιος, romanized: helios, lit.'sun') is a chemical element with the symbol He and atomic number 2.
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