1) The geometries of the ammonia complexes of Ni2+, Pt2+ and Zn2+ respectively are A) octahedral, square planar and tetrahedral B) square planar, octahederal and tetrahedral C) tetrahedral, square planar and octahedral D) octahedral, tetrahedral and square planar Answer: Option AExplanation:[Ni(NH3)6]2+sp3d2octahedral [Pt(NH3)4]2+dsp2squareplanar [Zn(NH3)4]2+sp3tetrahedral