Dimethyl glyoxime forms a square planar complex with $Ni^{2+}$. This complex should be

Which of the following is true for the complex $[Fe(CN)_6]^{4-}$?

Cobalt chloride when dissolved in water forms a pink-colored complex $X$ which has an octahedral geometry. This solution,upon treatment with concentrated $HCl$,forms a deep blue complex $Y$ which has a $Z$ geometry. $X$,$Y$,and $Z$,respectively,are:

The shape of the $[Fe(CN)_6]^{4-}$ ion is:

$Cu^{2+}$ shows a coordination number of

Which of the following pairs of structure and magnetic properties is correct for the tetracyanonickelate$(II)$ ion?