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Lattice Centering and Coordination Number02:33

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The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Related Experiment Video

Updated: Jan 19, 2026

Lattice Centering and Coordination Number
02:33

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Asymmetric conical diffraction in dislocated edge-centered square lattices: erratum.

Hua Zhong, Rong Wang, Milivoj R Belić

    Optics Express
    |September 13, 2019
    PubMed
    Summary
    This summary is machine-generated.

    This erratum corrects typos in equations (1) and (2) previously published in Optics Express. The corrections ensure accuracy for future optical research and applications.

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    Area of Science:

    • Optics and Photonics

    Background:

    • Published research in Optics Express may contain errors.
    • Accurate equations are crucial for scientific reproducibility.

    Purpose of the Study:

    • To correct typographical errors in specific equations.
    • To ensure the integrity of published scientific data.

    Main Methods:

    • Identification of typos in equations (1) and (2).
    • Correction of the identified errors.

    Main Results:

    • Equations (1) and (2) are presented with corrected mathematical expressions.
    • The erratum provides the accurate versions for reference.

    Conclusions:

    • The corrected equations are now available for use in the scientific community.
    • Ensuring accuracy in published formulas is vital for advancing optical science.