Question

which type of void exists​ in a ​2-dimensional​ square closed packed structure??

Answer 1

Now we have previously seen the closet packing in crystal structures. This packing happens at three different levels, one dimensional, two dimensional and three dimensional. Now we must realize those constituent particles have a spherical shape. And the unit cells of a crystal lattice is a cube. So when these atoms or ions are packed into a cube there will be space between the atoms. These spaces are known as voids.

We see these voids in the two-dimensional structures as well. Here there are two types of closet packing, and two types of voids. One is a square shape void and the other is a triangle shape void. But here we will be focusing on the voids in the three-dimensional structure.

Tetrahedral Voids

Tetrahedral voids and octahedral voids(Source: Chemistrystackexchange)

Now there are two types of three-dimensional close packing in crystals. One such type is Cubic Close packing. Here the two-dimensional structures are stacked in a specific alignment. The layers alternate with each other. So the second layer will be located in the depression of the first layer.

Answer 2

Answer:there are two types of void in three dimensional close packing..m

Explanation:

1.octahedral void

2.tetrahedral void