Mark the correct statements regarding the geometry of complex ions .
(i) The geometry of the complex ion depends upon the coordination number .
(ii) If coordination number is 6 , the complex is octahedral .
(iii) If coordination number is 4 , the geometry of the complex may be tetrahedral or square planar .
A. (i) , (ii) and (iii)
B. (i) and (ii) only
C. (i) and (iii) only
D. (ii) and (iii) only .
