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  2. Hund's rules - Wikipedia

    en.wikipedia.org/wiki/Hund's_rules

    However Hund's rules should not be used to order states other than the lowest for a given configuration. [5] For example, the titanium atom ground state configuration is ...3d 2 for which a naïve application of Hund's rules would suggest the ordering 3 F < 3 P < 1 G < 1 D < 1 S. In reality, however, 1 D lies below 1 G.

  3. Aufbau principle - Wikipedia

    en.wikipedia.org/wiki/Aufbau_principle

    In atomic physics and quantum chemistry, the Aufbau principle (/ ˈ aʊ f b aʊ /, from German: Aufbauprinzip, lit. 'building-up principle'), also called the Aufbau rule, states that in the ground state of an atom or ion, electrons first fill subshells of the lowest available energy, then fill subshells of higher energy. For example, the 1s ...

  4. List of eponymous laws - Wikipedia

    en.wikipedia.org/wiki/List_of_eponymous_laws

    Sieverts's law, in physical metallurgy, is a rule to predict the solubility of gases in metals. Named after German chemist Adolf Sieverts (1874–1947). Smeed's law is an empirical rule relating traffic fatalities to traffic congestion as measured by the proxy of motor vehicle registrations and country population. After R. J. Smeed.

  5. Molecular orbital diagram - Wikipedia

    en.wikipedia.org/wiki/Molecular_orbital_diagram

    The next step in constructing an MO diagram is filling the newly formed molecular orbitals with electrons. Three general rules apply: The Aufbau principle states that orbitals are filled starting with the lowest energy; The Pauli exclusion principle states that the maximum number of electrons occupying an orbital is two, with opposite spins

  6. Appeals court to trigger injunction against IL’s gun ban, or ...

    www.aol.com/appeals-court-trigger-injunction...

    On Nov. 19, the appeals court gave the plaintiffs until Nov. 27 to file briefs responding to whether a stay on McGlynn’s injunction should be continued pending appeal.

  7. Hund's rule of maximum multiplicity - Wikipedia

    en.wikipedia.org/wiki/Hund's_Rule_of_Maximum...

    Hund's rule of maximum multiplicity is a rule based on observation of atomic spectra, which is used to predict the ground state of an atom or molecule with one or more open electronic shells. The rule states that for a given electron configuration , the lowest energy term is the one with the greatest value of spin multiplicity . [ 1 ]

  8. Friedrich Hund - Wikipedia

    en.wikipedia.org/wiki/Friedrich_Hund

    Friedrich Hermann Hund (4 February 1896 – 31 March 1997) was a German physicist from Karlsruhe known for his work on atoms and molecules. [1] He is known for the Hund's rules to predict the electron configuration of chemical elements. His work on Hund's cases and molecular orbital theory allowed to understand the structure of molecules.

  9. US appeals court voids SEC private equity, hedge fund ...

    www.aol.com/news/us-appeals-court-overturns-sec...

    In a 3-0 decision on Wednesday, the New Orleans-based 5th U.S. Circuit Court of Appeals ruled in favor of six private equity and hedge fund groups, finding the SEC exceeded its authority by ...