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Match the type of packing given in Column I with the items given in Column II.
| Column I | Column II |
| (i) Square close packing in two dimensions | (a) Triangular voids |
| (ii) Hexagonal close packing in two dimensions | (b) Pattern of spheres is repeated in every fourth layer |
| (iii) Hexagonal close packing in three dimensions | (c) Coordination number 4 |
| (iv) Cubic close packing in three dimensions | (d) Pattern of sphere is repeated in alternate layers. |
Answers (1)
(i) —> (c); (ii) —> (a); (iii) —>(d); (iv) —> (b)
(i) In Square close packing in two dimensions, each sphere has coordination number 4, as shown in the diagram below.
(ii)In hexagonal close packing, in two dimensions, each sphere has coordination number 6 and a triangular void is created.
(iii) hcp in 3 dimensions is a repetitive pattern of ABAB…..
(iv) In ccp spheres are repeated at every 4th layer as in ABCABCA….
View full answer
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