Solid State Question 73
Question: Match the type of packing given in Column-I with the items given in Column-II.
| Column-I | Column-II |
|---|---|
| [a] Square close packing two dimensions | (1) Triangular voids |
| [b] Hexagonal close packing in two dimensions | (2) Pattern of sphere 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. |
Options:
A) A-3, B-1, C-4, D-2
B) A-1, B-2, C-3, D-4
C) A-3, B-2, C-1, D-4
D) A-4, B-3, C-2, D-1
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Coordination number is 4 in square close packing in two dimensions. Two dimensional hexagonal close packing contains triangular voids. Three dimensional hexagonal close packing have ABAB …… arrangement whereas ccp have ABCAABC … type arrangement.
BETA
