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Helium (from Greek: ἥλιος, romanized: helios, lit. 'sun') is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble gas group in the periodic table.
HELIUM definition: 1. a chemical element that is a gas lighter than air, that will not burn and is used in balloons…. Learn more.
The meaning of HELIUM is a chemical element of the noble gas group with atomic number 2 that is found especially in natural gases and used chiefly for inflating airships and balloons, as a coolant for superconductors, and as a component of inert atmospheres (as in welding) —often used before another noun.
25 Οκτ 2024 · Helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C (−452 °F). It is the second lightest element and the second most abundant in the universe, and it is produced by radioactive decay of heavier elements.
Helium is a chemical element that is a gas lighter than air, that will not burn and is used in balloons, airships, and some types of lights. Learn more about helium, see examples from literature and translations in different languages.
Helium is a colorless, odorless, nonflammable gas that is the second most abundant element in the universe. It was discovered in 1868 by its spectrum in the Sun's corona and is used for balloons, cryogenics, and nuclear fusion.
HELIUM definition: a gas that is lighter than air and that will not burn (formula He): . Learn more.
