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  2. Atomic orbital - Wikipedia

    en.wikipedia.org/wiki/Atomic_orbital

    The shapes of the first five atomic orbitals are 1s, 2s, 2p x, 2p y, and 2p z.The two colors show the phase or sign of the wave function in each region. Each picture is domain coloring of a ψ(x, y, z) function which depends on the coordinates of one electron.

  3. Radial distribution function - Wikipedia

    en.wikipedia.org/wiki/Radial_distribution_function

    The radial distribution function is of fundamental importance since it can be used, using the Kirkwood–Buff solution theory, to link the microscopic details to macroscopic properties. Moreover, by the reversion of the Kirkwood–Buff theory, it is possible to attain the microscopic details of the radial distribution function from the ...

  4. Slater's rules - Wikipedia

    en.wikipedia.org/wiki/Slater's_rules

    An example provided in Slater's original paper is for the iron atom which has nuclear charge 26 and electronic configuration 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2.The screening constant, and subsequently the shielded (or effective) nuclear charge for each electron is deduced as: [1]

  5. Electron configuration - Wikipedia

    en.wikipedia.org/wiki/Electron_configuration

    As an example, the ground state configuration of the sodium atom is 1s 2 2s 2 2p 6 3s 1, as deduced from the Aufbau principle (see below). The first excited state is obtained by promoting a 3s electron to the 3p subshell, to obtain the 1s 2 2s 2 2p 6 3p 1 configuration, abbreviated as the 3p level. Atoms can move from one configuration to ...

  6. List of probability distributions - Wikipedia

    en.wikipedia.org/wiki/List_of_probability...

    The Bates distribution is the distribution of the mean of n independent random variables, each of which having the uniform distribution on [0,1]. The logit-normal distribution on (0,1). The Dirac delta function, although not strictly a probability distribution, is a limiting form of many continuous probability functions. It represents a ...

  7. Slater-type orbital - Wikipedia

    en.wikipedia.org/wiki/Slater-type_orbital

    STOs have the following radial part: =where n is a natural number that plays the role of principal quantum number, n = 1,2,...,; N is a normalizing constant,; r is the distance of the electron from the atomic nucleus, and

  8. Degenerate energy levels - Wikipedia

    en.wikipedia.org/wiki/Degenerate_energy_levels

    In this case, the Hamiltonian commutes with the total orbital angular momentum ^, its component along the z-direction, ^, total spin angular momentum ^ and its z-component ^. The quantum numbers corresponding to these operators are ℓ {\displaystyle \ell } , m ℓ {\displaystyle m_{\ell }} , s {\displaystyle s} (always 1/2 for an electron) and ...

  9. Bohr radius - Wikipedia

    en.wikipedia.org/wiki/Bohr_radius

    In Schrödinger's quantum-mechanical theory of the hydrogen atom, the Bohr radius is the value of the radial coordinate for which the radial probability density of the electron position is highest. The expected value of the radial distance of the electron, by contrast, is ⁠ 3 2 a 0 {\displaystyle {\tfrac {3}{2}}a_{0}} ⁠ .