Among the following, identify the species with an atom in `+6` oxidation state.

Options

A. `MnO_(4)^(-)`
B. `Cr(CN)_(6)^(3-)`
C. `NiF_(6)^(2-)`
D. `CrO_(2)CI_(2)`

Answer

D

Explanation

Chromyl chloride is a chemical compound with the formula `CrO_(2)Cl_(2)`. This compound is an opaque dark blood-red liquid at room temperature and pressure. It is tetrahedral, somewhat like `SO_(2)Cl_(2)`. `CrO_(2)Cl_(2)` is similar to the most commonly encountered chromium(VI) derivative chromate, `[CrO_(4)]^(2-)` , both are tetrahedral Cr(VI) compounds. They differ in physical properties, one is a liquid and the other forms salts. And they differ in oxidizing power as well.