Question

The presence of vacant lattice sites in a crystal increases its entropy or not​

Answer 1

crystals are a type of solid material composed of atoms or groups of atoms that are arranged in a three-dimensional pattern that is very ordered. In a crystal, the groups of atoms are repetitive at evenly spaced intervals, all maintaining their orientation to one another. In other words, the geometric shape of a crystal is highly symmetrical. When you see the word 'symmetrical,' think about the perfect proportion and balance of these atoms in a crystal. Now that we know what a crystal is, and that is can be found inside our table salt and a sparkly diamond, let's look at crystal lattices.

A crystal lattice is the arrangement of these atoms, or groups of atoms, in a crystal. These atoms or groups of atoms are commonly referred to as points within a crystal lattice site.