NEET Chemistry The Solid State Questions Solved


A crystal formula AB3 has A ions at the cube corners and B ions at the edge centres. The coordination numbers of A and B are respectively 

(A) 6 and 6                                                 

 (B) 2 and 6

(C) 6 and 2                                                 

 (D) 8 and 8

(C). Co-ordination of cationCo-ordination no of anion 

   =charge of cationcharge of anion=31=3

Now Co-ordination no. of A is as shown so of B is 2.

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