Column 1 | Column 11 | |
A. | Square close packing in two dimensions | 1. Triangular voids |
B. | Hexagonal close packing in two dimensions | 2. Pattern of spheres is repeated in every fourth layer |
C. | Hexagonal close packing in three dimensions | 3. Coordination number = 4 |
D. | Cubic close packing in three dimensions | 4. Pattern of sphere is repeated in alternate layers |
Answer:
A. ® (3) B. ®
(1) C. ® (4) D. ® (2)
A. Square close packing in two
dimensions each sphere have coordination number 4, as
shown below
B. Hexagonal close packing in
two dimensions each sphere have coordination number 6 as shown below and
creates a triangular void
C. Hexagonal close packing in 3
dimensions is a repeated pattern of sphere in alternate layers also known as
ABAB pattern
D. Cubic close packing in a 3
dimensions is a repeating pattern of sphere in every fourth layer
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