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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.
25 Οκτ 2024 · Helium, chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element, helium is a colorless, odorless, and tasteless gas that becomes liquid at -268.9 degrees Celsius. The boiling and freezing points of helium are lower than those of any other known substance.
Helium is a colorless, odorless, and tasteless gas that belongs to the noble gases group. It is chemically inert, meaning it does not easily form compounds with other elements, and has many applications in healthcare, industry, and everyday life.
2 ημέρες πριν · Helium is a noble gas with low density, boiling point, and freezing point. It has various applications in cryogenics, welding, leak detection, and more. Learn about its properties and uses in detail.
Helium is a colourless, odourless gas that is totally unreactive and has many applications in science and industry. It is the second most abundant element in the universe and is formed from alpha-particle decay of radioactive elements in the Earth.
15 Νοε 2018 · Helium, the second most abundant element in the universe, is a colorless, odorless gas. It possesses unique properties that make it ideal for modern technological advances, such as semiconducting. Some of the everyday uses of helium include party balloons, car airbags, laser scanning and more.
19 Οκτ 2023 · What is helium used for, and where does it come from? Learn facts about this noble gas, including how it causes balloons to float, its surprising uses in medicine and exploration, and how its limited availability on Earth could affect science and industry.
