A) 40 pm
B) 127 pm
C) 80 pm
D) 108 pm
Correct Answer: B
Solution :
| [b] Give, edge length = 361 pm |
| Four metal atoms in one unit cell |
| i.e. effective number in unit cell (z) = 4 (given) |
| \[\therefore \] It is a FCC Structure |
| \[\therefore \] Face diagonal = 4r |
| \[\sqrt{2}a=4r\Rightarrow r=\frac{\sqrt{2}+361}{4}=127pm\] |
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