Identify the number of moles of donor atoms in $2n$ moles of $SCN^{-}$.

What type of ligand is the oxalate ion?

An excess of $AgNO_3$ is added to $100 \ mL$ of a $0.01 \ M$ solution of dichlorotetraaqua-chromium$(III)$ chloride. The number of moles of $AgCl$ precipitated would be

One mole of the octahedral complex compound $Co(NH_3)_5Cl_3$ gives $3$ moles of ions on dissolution in water. One mole of the same complex reacts with excess of $AgNO_3$ solution to yield two moles of $AgCl_{(s)}$. The structure of the complex is :

Which among the following statements is wrong regarding Mohr's salt?

Which statement from the following is true for the complex hexamminecobalt$(III)$ chloride?