The smallest repeating portion of a crystal lattice that shows the full symmetry of the crystal is called the
Correct answer: A. unit cell
- A. unit cell
- B. crystal face
- C. lattice point
- D. domain
Explanation
Stacking the unit cell repeatedly in three dimensions generates the entire crystal, so knowing its dimensions and contents describes the whole structure. A lattice point is a single position within that cell rather than the repeating block itself. The seven crystal systems are classified by the shapes and angles the unit cell can take.
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About Crystal Lattice
A crystal lattice is the regular three-dimensional arrangement of particles in a crystalline solid. The content includes lattice points, unit cells, coordination number, packing patterns, and the differences among ionic, metallic, molecular and covalent network crystals, which should not be confused with amorphous solids.
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