`Fe^(3+)overset(SNC^(Θ)("Excess"))rarrunderset("Bloodre"d)(A)overset(F^(ΘExcess))rarrunderset("Colourless")(B)`
Identify `A` and `B`
Write the `IUPAC` name of `A` and `B`

Explanation

To solve the question, we need to identify the complexes A and B formed in the given reactions involving Fe³⁺ and SCN⁻, and then provide their IUPAC names.

### Step 1: Identify Complex A
- The reaction starts with Fe³⁺ ions reacting with SCN⁻ ions.
- The complex formed is known to be blood red in color.
- The formula for this complex can be deduced as [Fe(SCN)₆]³⁺, which is known to be a blood red complex.

### Step 2: Write the IUPAC Name for Complex A
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