. Niobium crystallises in body-centred cubic structure. If density is 8.55 g cm–3, calculate atomic radius of niobium using its atomic mass 93 u.


Niobium crystallises in body-centred cubic structure. If density is 8.55 g cm–3, calculate atomic radius of niobium using its atomic mass 93 u.
 
Hint :   Radius(r) of unit cell is related to a for bcc structure as r =  1So,
 
            Step I First calculate the edge length of unit cell.
 
            Step II Then Calculate the radius of unit cell.
 

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