Unit cell — Free Chemistry Illustration

Chemistry

Unit cell

A clean schematic of a crystal unit cell shown as a transparent three-dimensional wireframe box, usually cubic but sometimes as a rectangular or slightly skewed parallelepiped. The cell is outlined with thin black or gray lines, with front and back edges visible. Small solid spheres mark atom positions at the eight corners, and depending on lattice type may also appear at face-centered or body-centered positions, with a few spheres optionally shown inside. The overall appearance is geometric, minimal, and clearly represents the smallest repeating crystallographic unit.

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