Here's a breakdown of the formula:

* H₃: Represents three hydrogen atoms, indicating the acidic nature of the compound.

* [Fe(CN)₆]: This complex ion is called the Ferricyanide ion.

* Fe: Represents a single iron atom in the +3 oxidation state.

* (CN)₆: Represents six cyanide ions (CN⁻) bound to the iron atom.

Important Note: Hydroferricyanic acid is a highly unstable compound and exists only in solution.