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- Properties of helium include12:
- It is a gaseous chemical element with the atomic number 2, the weight of 4.0026 g/mol, and the symbol He12.
- It is one of the noble gases in group 0 of the periodic table2.
- It is a colorless, odorless, bland, and non-toxic gas2.
- It has a very low density of 0.0001785 grams per cubic centimeter1.
- It has a very low melting point of minus 458.0 degrees Fahrenheit (minus 272.2 degrees Celsius) and a very low boiling point of minus 452.07 F (minus 268.93 C)1.
- It is mainly obtained from natural gas sources in the United States2.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.According to the Jefferson National Linear Accelerator Laboratory, the properties of helium are:
- Atomic number (number of protons in the nucleus): 2
- Atomic symbol (on the Periodic Table of Elements ): He
www.livescience.com/28552-facts-about-helium.htmlPhysical Properties of Helium
- He is a gaseous chemical element with the atomic number 2, the weight of 4,0026 g/mol, and the symbol He.
- It is one of the noble gases in group 0 of the periodic table. ...
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In the perspective of quantum mechanics, helium is the second simplest atom to model, following the hydrogen atom. Helium is composed of two electrons in atomic orbitals surrounding a nucleus containing two protons and (usually) two neutrons. As in Newtonian mechanics, no system that consists of more than two particles can be solved with an exact analytical mathematical approach (see 3-body problem) and helium is no exception. Thus, numerical mathematical methods are re…
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