Question

The smallest repeating three-dimensional pattern in a solid is known as: A:crystalline solid B:amorphous solid
C:unit cell

Answer 1

unit cell

Answer 2

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Answer 3

The smallest repeating pattern of crystalline solids is known as the unit cell, and unit cells are like bricks in a wall—they are all identical and repeating. The other main type of solids are called the amorphous solids. Amorphous solids do not have much order in their structures. Though their molecules are close together and have little freedom to move, they are not arranged in a regular order as are those in crystalline solids. Common examples of this type of solid are glass and plastics.