the smallest group of particles within a crystal that retains the geometric shape of the crystal; the simplest unit of repetition in a crystal lattice.
The smallest sample of a substance that has a complete representation of its atomic structure. A crystal structure is formed by repetition of the unit cell in three dimensions.
The smallest contiguous group of atomic structural units in a mineral that can be repeated in three directions to form crystal.
a pattern found in crystals consisting of atoms, ions, or molecules in a regular geometric arrangement or lattice constantly repeated in three dimensions.
The fundamental building block of the crystalline structure. The smallest group of atoms that is periodically repeated throughout the crystal. The key to identifying unit cells is geometry.
the smallest group of atoms or molecules whose repetition at regular intervals in three dimensions produces the lattices of a crystal
a spatial arrangement of atoms which is tiled in three-dimensional space to describe the crystal
The basic repeating unit in a crystal.
The minimum repeat unit within a crystal.
In crystallography, the smallest fragment of a crystal that is exactly reproduced in the construction of the crystal lattice. Opposite sides of a unit cell are parallel, and the distances along the edges measure unit cell size. In the description of zeolites used in FCC catalysts, unit cell sizes vary with the atomic Si/Al ratio in the unit cell.
the smallest unit of a crystal that has the repeated structure of the crystal
the basic structural unit of a crystal structure.
The simplest arrangement of atoms or molecules that regularly repeats in a crystal structure.
