What is the smallest part of the crystal that has the three-dimensional pattern of the whole lattice called?
A
Unit cell
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B
Three-dimensional
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C
Molecule
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D
Atom
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E
Electron
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Solution
The correct option is A Unit cell A unit cell is the smallest part of a crystal, it has a three-dimensional pattern of the whole lattice. The repetitive pattern of the unit cell will produce the entire crystal lattice. A unit cell has the overall symmetry of the crystal.