Question

what is the difference between a tetrahedral void and octahedral void

Answer 1

COORDINATION NO. OF ATOMS IN TETRAHEDRAL VOIDS IS 4. 
C.N OF ATOMS IN OCTAHEDRAL VOIDS IS 6.

MOREOVER , OCTAHEDRAL VOIDS = 2N 
                        TETRAHEDRAL VOIDS = N 

N= NO. OF PARTICLES FORMING THE UNIT CELL