Complex compound$(s)$ having an even number of space (stereo) isomers is/are :
(where $AA^{-}$ is a symmetrical bidentate ligand and $a, b, c, d, e$ are monodentate ligands)

Amongst the following ions,which one has the highest magnetic moment value?
$(i)$ $[Cr(H_2O)_6]^{3+}$
$(ii)$ $[Fe(H_2O)_6]^{2+}$
$(iii)$ $[Zn(H_2O)_6]^{2+}$

Which of the following complexes can exhibit both geometrical and optical isomerism?

The diamagnetic species is

The total number of isomers for a square planar complex $[M(F)(Cl)(SCN)(NO_2)]$ is

Given below are two statements:
Statement-$I$ : The number of paramagnetic species among $[CoF_6]^{3-}$, $[TiF_6]^{3-}$, $V_2O_5$ and $[Fe(CN)_6]^{3-}$ is $3$.
Statement-$II$ : $K_4[Fe(CN)_6] < K_3[Fe(CN)_6] < [Fe(H_2O)_6]SO_4 \cdot H_2O < [Fe(H_2O)_6]Cl_3$ is the correct order in terms of number of unpaired electron$(s)$ in the complexes.
In the light of the above statements, choose the correct answer from the options given below.