Lithium crystallizes in a body centred cubic lattice. How many next-nearest neighbors does each Li have?
(1) 6                    (2) 8                       (3) 12                  (4) 4

Dear student 
You can see the bcc crystal structure 




In this question here asked about coordination no. for bcc C.N = 8 
The C.N number is the no.of nearer atom. there will be 8 next-nearest neighbors.