The magnetic moment for two complexes of empirical formula `Ni(NH_(3))_(4)(NO_(3))_(2).2H_(2)O` is zero and 2.84 BM respectively. The second complex is not a netural complex.
The correct formula and geometry of the first complex is :
A. `[Ni(H_(2)O)_(2)(NO_(3))_(2).4NH_(3)`,tetrahedral
B. `[Ni(NH_(3))_(4)](CO)_(3))_(2).2H_(2)O`,tetrahedral
C. `[Ni(NH_(3))_(4)](NO_(3))_(2).2H_(2)O`,square planar
D. `[Ni(NH_(3))_(4)](H_(2)O)_(2)](NO_(3))_(2)`, octahedral