Solid State - Result Question 24
24. The coordination number of a metal crystallising in a hexagonal close-packed structure is
(1999, 2M)
(a) $12 $
(b) $4 $
(c) $8 $
(d) $6 $
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Answer:
Correct Answer: 24. (a)
Solution:
- Three consecutive layers of atoms in hexagonal close packed lattice is shown below:
Atom $X$ is in contact of $12$ like atoms, $6$ from layer $B$ and $3$ from top and bottom layers $A$ each.
BETA
