Question

write about the Square close packing ​

Answer 1

Answer:

It is also called two-dimensional square close packing as the rows of spheres when arranged in vertical and horizontal alignments form a square. The packing in which the spheres in the second row are located in the depressions of the first row.

Answer 2

Answer:

One dimensional rows of close packed spheres are stacked over each other such that the spheres align vertically and horizontally If the first row is labelled as 'A' type, being exactly same as the first row, the second row is also labelled as 'A' type. Hence this arrangement is called A, A, A, A..... type two dimensional arrangement.

In this arrangement, every sphere touches four neighbouring spheres. Hence, two dimensional coordination number, here, is 4. A square is obtained by joining the centres of these four closest neighbours Therefore, this two dimensional close packing is called square close packing in two dimension.