Question

Give d iupac name of K3[Cr(C2O4)3]

Answer 1

Potassium-Tri aceto chromate(+3)

Answer 2

Explanation:

The compound $K_{3}[Cr(C_{2}O_{4})_{3}]$ has an anionic coordination sphere.

This anionic coordination sphere is $[Cr(C_{2}O_{4})_{3}]$. It is a rule that when coordination sphere is anionic then suffix "ate" is added to the stem name of metal.

For example, in anionic coordination sphere $K_{2}[Ni(CN)_{4}]$, the stem metal is nickel. Therefore, as per the rule its name will be Potassiun tetracynonickelate(II).

Therefore, the name of compound $K_{3}[Cr(C_{2}O_{4})_{3}]$ is Potassium trioxalatochromate(III).