Question

In how many ways, can the two-dimensional close packed structure be generated?

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is B 2

Two-dimensional close packed structure can be generated using the one-dimensional close packed structures. This can be done in 2 ways:
(a) By placing one row of one-dimensional structure below another in such a way that the spheres are one below the another.
(b) By placing one row of one-dimensional structure below another such that spheres of second row fit in the depressions of the first row.