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  2. Spin quantum number - Wikipedia

    en.wikipedia.org/wiki/Spin_quantum_number

    The phrase spin quantum number refers to quantized spin angular momentum. The symbol s is used for the spin quantum number, and m s is described as the spin magnetic quantum number [3] or as the z-component of spin s z. [4] Both the total spin and the z-component of spin are quantized, leading to two quantum numbers spin and spin magnet quantum ...

  3. Spin (physics) - Wikipedia

    en.wikipedia.org/wiki/Spin_(physics)

    Spin is an intrinsic form of angular momentum carried by elementary particles, and thus by composite particles such as hadrons, atomic nuclei, and atoms. [1] [2]: 183–184 Spin is quantized, and accurate models for the interaction with spin require relativistic quantum mechanics or quantum field theory.

  4. Term symbol - Wikipedia

    en.wikipedia.org/wiki/Term_symbol

    9/2 represents final total spin quantum number S, total orbital angular momentum quantum number L and total angular momentum quantum number J in this atomic energy level. The symbols 4 F and 3 P o refer to seven and two electrons respectively so capital letters are used. 4f 7 (8 S 0)5d (7 D o)6p 8 F 13/2: There is a space between 5d and (7 D o).

  5. Electron - Wikipedia

    en.wikipedia.org/wiki/Electron

    This property is usually stated by referring to the electron as a spin-1/2 particle. [79] For such particles the spin magnitude is ⁠ ħ / 2 ⁠, [84] while the result of the measurement of a projection of the spin on any axis can only be ± ⁠ ħ / 2 ⁠. In addition to spin, the electron has an intrinsic magnetic moment along its spin axis ...

  6. Larmor precession - Wikipedia

    en.wikipedia.org/wiki/Larmor_precession

    Larmor precession is important in nuclear magnetic resonance, magnetic resonance imaging, electron paramagnetic resonance, muon spin resonance, and neutron spin echo. It is also important for the alignment of cosmic dust grains, which is a cause of the polarization of starlight .

  7. Triplet state - Wikipedia

    en.wikipedia.org/wiki/Triplet_state

    In quantum mechanics, a triplet state, or spin triplet, is the quantum state of an object such as an electron, atom, or molecule, having a quantum spin S = 1. It has three allowed values of the spin's projection along a given axis m S = −1, 0, or +1, giving the name "triplet".

  8. Molecular term symbol - Wikipedia

    en.wikipedia.org/wiki/Molecular_term_symbol

    The molecular term symbol is then defined as 2S+1 Λ. and the number of electron degenerate states (under the absence of spin-orbit coupling) corresponding to this term symbol is given by: (2S+1)×2 if Λ is not 0 (2S+1) if Λ is 0.

  9. Spin states (d electrons) - Wikipedia

    en.wikipedia.org/wiki/Spin_states_(d_electrons)

    Low-spin [Fe(NO 2) 6] 3− crystal field diagram. The Δ splitting of the d orbitals plays an important role in the electron spin state of a coordination complex. Three factors affect Δ: the period (row in periodic table) of the metal ion, the charge of the metal ion, and the field strength of the complex's ligands as described by the spectrochemical series.