Answer :
Given:
Molecular mass, M = 75g
Edge Length, a= 5 A° = 5 × 10-10 m
Density, d = 2g/cc
To find: Radius of the metal atom, r
Solution:
Where z = number of atoms present per unit cell
Z = 2
Since the number of atoms is 2, the metal crystallizes in BCC structure.
r = 2.165 A° = 216.5 pm
Therefore the radius of the metal atom is 216.5 pm.
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