A) \[6.022\times {{10}^{23}}\]
B) \[3.011\times {{10}^{23}}\]
C) \[9.033\times {{10}^{23}}\]
D) \[4.516\times {{10}^{23}}\]
Correct Answer: C
Solution :
| In hexagonal close packed structure, there are 6 atoms per unit cell. |
| Number of octahedral voids = 6 |
| Number of tetrahedral voids \[=2\times 6=12\] |
| Total number of voids \[=6+12=18\] |
| Total number of voids per atom \[=\frac{18}{6}=3\] |
| In 1 mole of a compound, the total number of voids \[=3\times 6.023\times {{10}^{23}}\] |
| In \[0.5\]mole compound, the total number of voids\[=3\times 0.5\times 6.023\times {{10}^{23}}\] |
| \[=9.034\times {{10}^{23}}\] |
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