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  2. Electron configuration - Wikipedia

    en.wikipedia.org/wiki/Electron_configuration

    For example, the electron configuration of the neon atom is 1s 2 2s 2 2p 6, meaning that the 1s, 2s, and 2p subshells are occupied by two, two, and six electrons, respectively. Electronic configurations describe each electron as moving independently in an orbital, in an average field created by the nuclei and all the other

  3. Band diagram - Wikipedia

    en.wikipedia.org/wiki/Band_diagram

    E F or μ: Although it is not a band quantity, the Fermi level (total chemical potential of electrons) is a crucial level in the band diagram. The Fermi level is set by the device's electrodes. For a device at equilibrium, the Fermi level is a constant and thus will be shown in the band diagram as a flat line. Out of equilibrium (e.g., when ...

  4. Hund's rules - Wikipedia

    en.wikipedia.org/wiki/Hund's_rules

    The lightest atom that requires the second rule to determine the ground state term is titanium (Ti, Z = 22) with electron configuration 1s 2 2s 2 2p 6 3s 2 3p 6 3d 2 4s 2. In this case the open shell is 3d 2 and the allowed terms include three singlets ( 1 S, 1 D, and 1 G) and two triplets ( 3 P and 3 F).

  5. Noble gas - Wikipedia

    en.wikipedia.org/wiki/Noble_gas

    As a result of a full shell, the noble gases can be used in conjunction with the electron configuration notation to form the noble gas notation. To do this, the nearest noble gas that precedes the element in question is written first, and then the electron configuration is continued from that point forward.

  6. Electron counting - Wikipedia

    en.wikipedia.org/wiki/Electron_counting

    ionic counting: Fe(0) contributes 8 electrons, each CO contributes 2 each: 8 + 2 × 5 = 18 valence electrons conclusions: this is a special case, where ionic counting is the same as neutral counting, all fragments being neutral. Since this is an 18-electron complex, it is expected to be isolable compound. Ferrocene, (C 5 H 5) 2 Fe, for the ...

  7. Here are 12 well-known companies that went bankrupt in 2024 - AOL

    www.aol.com/12-well-known-companies-went...

    Stoli. Stoli Group USA, the owner of the namesake vodka, filed for bankruptcy in December. A number of things went wrong for the unit, including a slowing demand for spirits, a major cyberattack ...

  8. Term symbol - Wikipedia

    en.wikipedia.org/wiki/Term_symbol

    n′ℓ is an attempt to describe electronic configuration of the excited electron in a way of describing electronic configuration of hydrogen atom. # is an additional number denoted to each energy level of given n′ℓ (there can be multiple energy levels of given electronic configuration, denoted by the term symbol).

  9. Jack Nicholson, 87, Seen in Rare Photo While Sharing a ...

    www.aol.com/lifestyle/jack-nicholson-87-seen...

    Jack Nicholson spent some quality time with his loved ones over the holiday season.. In an Instagram post shared by his daughter Lorraine Nicholson on Thursday, Jan. 2, the actor, 87, was captured ...