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  1. en.wikipedia.org › wiki › Helium_atomHelium atom - Wikipedia

    Learn how to solve the Schrödinger equation for the helium atom, the simplest multi-electron system, using various approximations. Explore the concepts of spin, symmetry, entanglement and degeneracy in helium atom states.

  2. en.wikipedia.org › wiki › HeliumHelium - Wikipedia

    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.

  3. 25 Οκτ 2024 · Helium is a colourless, odourless, and tasteless gas that becomes liquid at −268.9 °C. It is the second lightest element and the second most abundant in the universe, but it is rare on Earth and has unique properties such as superfluidity.

  4. Learn about helium, a colourless, odourless and unreactive gas that is the second most abundant element in the universe. Find out how helium is used in cooling, balloons, lasers, scanning and more.

  5. Helium is a colorless, odorless, nonmetallic gas with the symbol He and atomic number 2. It has two electrons in one shell and belongs to group 18 of the periodic table. Learn about its physical, chemical, and thermodynamic properties, as well as its history and uses.

  6. chem.libretexts.org › Bookshelves › Physical_and_Theoretical_Chemistry_Textbook8: The Helium Atom - Chemistry LibreTexts

    30 Ιαν 2023 · Learn how to approximate the ground-state energy of helium atom using Schrödinger equation and variational method. Compare the results with experimental data and discuss the role of electron repulsion in quantum mechanics.

  7. Helium is a noble gas with atomic number 2 and mass number 4. It is colorless, odorless, and non-toxic. It has low melting and boiling points, and is used in various applications such as cryogenics, welding, and balloons.

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