$1.$ ${\mathrm{K}}_2\left[\mathrm{Cr}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_3\right]$
$2.$ ${\mathrm{K}}_3\left[\mathrm{Cr}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_3\right]$
$3.$ ${\mathrm{K}}_3\left[\mathrm{Cr}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_2\right]$
$4.$ ${\mathrm{K}}_2\left[\mathrm{Cr}{\left({\mathrm{C}}_2{\mathrm{O}}_4\right)}_4\right]$

The complex that is used as an anticancer agent is:

1. mer-[Co(NH₃)₃Cl₃]        

2. cis-[PtCl₂(NH₃)₂]

3. cis-K₂[PtCl₂ Br₂]           

4. Na₂[CoCl₄]

IUPAC name of [Pt(NH₃)₃(Br)(NO₂)Cl]Cl is:

Cobalt(III) chloride forms several octahedral complexes with ammonia.
A compound among the following that does not give a test for chloride ions with silver nitrate at 25 °C is:

The IUPAC name of [\(\mathrm {C r \left(en\right)_{3}}\)]\(\mathrm{C l}_{3}\)${\mathrm{}}_{}$ is:

Which of the following correctly represents the structural formulas of the complexes PtCl₄·2NH₃ and PtCl₄·2KCl, respectively, if neither forms an AgCl precipitate with AgNO₃,
while one mole of each produces zero and three moles of ions in solution, respectively?

1. [PtCl₂(NH₃)₂]Cl₂ and K₂[PtCl₆]

2.  [PtCl₄(NH₃)₂] and K₂[PtCl₂(NH₃)₂]

3.  [PtCl₄(NH₃)₂] and K₂[PtCl₆]

4.  PtCl₄·2NH₃ and PtCl₄·2KCl

The sum of the coordination number and oxidation number of the metal M in the complex [M(en)₂(C₂O₄)]Cl is:

2.335 g of compound X (empirical formal CoH₁₂N₄Cl₃) upon treatment with excess AgNO₃ solution produces 1.435 g of a white precipitate. Determine the primary and secondary valences of cobalt in compound X, respectively.

[Given Atomic mass: Co = 59, Cl = 35.5, Ag = 108]

The correct IUPAC name for Mn₃(CO)₁₂ is:

1. Dodecacarbonylmanganate(0)

2. Dodecacarbonylmanganate(II)

3. Dodecacarbonyltrimanganese(0)

4. Manganicdodecacarbonyl0)

The species that cannot act as an ambidentate ligand is: