1.

Sodium metal exists in bcc unit cell. The distance between nearest sodium atoms is 0.368 nm. The edge length of unit cell is .........

Answer»

0.368 nm 
0.184 nm 
0.425 nm 
0.575 nm 

Solution :In bcc structure, the closest DISTANCE (d)
between two ATOMS `= (sqrt(3)a)/2`
`THEREFORE` distance `(d) = 0.368 = (sqrt(3)a)/(2)`
`IMPLIES a = 0.425`.


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