NEET Chemistry The Solid State Questions Solved


Copper metal has a face-centred cubic structure with the unit cell length equal to 0.361 nm. Picturing copper ions in contact along the face diagonal. The apparent radius of a copper ion is-

(A) 0.128                                         

(B) 1.42

(C) 3.22                                           

(D) 4.22

(A). For a face-centred cube, we have.
radius = 2a4=2×0.3614nm=0.128

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