The special shapes in crystals show a pattern called what

The basic special shapes in crystals are known as lattices.

These lattices have varying shapes, cubic, trigonal, orthorhombic, hexagonal, tetragonal and monoclinic.

Ionic compounds have unique properties. They are capable of forming crystals. A crystal is made up of a  symmetrical and orderly pattern of atoms that are known as crystal lattices. These crystal lattice shape is an arrangement that takes the least amount of energy to maintain.

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