The number of ions produced by the complex $[Co(N{H}_3{)}_{4}C{l}_2]Cl[Co(NH\_3)\_4Cl\_2]\; Cl$ is

The dimagnetic species is

Which one of the following is an inner orbital complex as well as diamagnetic in behaviour (Atomic no. Zn = 30, Cr = 24, Co = 27, Ni = 28)

Among $[Ni(CO{)}_4],[Ni(CN{)}_4{]}^{2-}and[NiC{l}_4{]}^{2-}[Ni(CO)\_4],\; [Ni(CN)\_4]^\{2-\}\backslash ,\; and\backslash ,\; [NiCl\_4]^\{2-\}$ Species, the hybridization states at the Nickel atom are respectively

The strongest ligand in the following is

Magnetic moment of $(N{H}_4{)}_2(MnB{r}_4)(NH\_4)\_2\; (MnBr\_4)$ is BM

The complex which violates EAN rule is

EDTA is a ligand of the type

The cationic complex among the following is

If Z is the atomic number of a metal, X is number of electrons lost forming metal ion and Y is the number of electrons from the ligands then EAN is