The sum of the oxidation state and the coordination number of the central metal atom is maximum for which of the following complexes?

The $IUPAC$ name of the complex $[Cr(NH_3)_3(H_2O)_2Cl]Cl_2$ is:

The $IUPAC$ name of $K_3[Fe(CN)_6]$ is:

State the $IUPAC$ name of the following complex: $[Cr(C_2O_4)_3]^{3-}$

Using $IUPAC$ norms,write the systematic names of the following:
$(i)$ $[Co(NH_3)_6]Cl_3$
$(ii)$ $[Pt(NH_3)_2Cl(NH_2CH_3)]Cl$
$(iii)$ $[Ti(H_2O)_6]^{3+}$
$(iv)$ $[Co(NH_3)_4Cl(NO_2)]Cl$
$(v)$ $[Mn(H_2O)_6]^{2+}$
$(vi)$ $[NiCl_4]^{2-}$
$(vii)$ $[Ni(NH_3)_6]Cl_2$
$(viii)$ $[Co(en)_3]^{3+}$
$(ix)$ $[Ni(CO)_4]$

Using $IUPAC$ norms,write the formulas for the following:
$(i)$ Tetrahydroxozincate $(II)$
$(ii)$ Potassium tetrachloridopalladate $(II)$
$(iii)$ Diamminedichloridoplatinum $(II)$
$(iv)$ Potassium tetracyanonickelate $(II)$
$(v)$ Pentaamminenitrito$-O$-cobalt $(III)$
$(vi)$ Hexaamminecobalt $(III)$ sulphate
$(vii)$ Potassium tri(oxalato)chromate $(III)$
$(viii)$ Hexaammineplatinum $(IV)$
$(ix)$ Tetrabromidocuprate $(II)$
$(x)$ Pentaamminenitrito$-N$-cobalt $(III)$