Point out the correct structure of trans `[NiBr_2(PPh_3)_2]` & meridional `[Co(NH_3)_3(NO_2)_3]`

The correct structures of trans- [NiBr_2(PPh_3)_2] " and meridonial - " [Co(NH_3)_3(NO_2)_3] , respectively, are :

The IUPA name of [Co(NH_3)_3(NO_2)_3] is

The IUPA name of [Co(NH_3)_4Cl(NO_2)]Cl is

The correct IUPAC name [Co(NH_(3))_(3)(NO_(2))_(3)] is