Which of the following statement(s) is/are CORRECT for complex (A).

$4 F e C l_{3} + 3 K_{4} [F e (CN)_{6}] \to (A) + 12 K Cl$

Question

Which of the following statement(s) is/are CORRECT for complex (A). 4 F e C l 3 ​ + 3 K 4 ​ [ F e ( CN ) 6 ​ ] → ( A ) + 12 K Cl

TestHub · Accepted Answer

Identify Complex (A): Balancing the given chemical reaction yields Fe₄[Fe(CN)₆]₃ (Prussian blue).

Verify Statement B: The central metal ion inside the coordination sphere is Fe²⁺. Its Effective Atomic Number is $E . A . N . = 26 (A t o mi c N o .) - 2 (O x i d a t i o n St a t e) + 12 (L i g an d e l ec t ro n s) = 36$ (Correct).

Verify Statement D: One formula unit dissociates into $4 F e^{3 +}$ ions (counter ions) and $3 [F e (CN)_{6}]^{4 -}$ ions (complex ions), giving a total of 7 ions (Correct).

Invalid Statements: Statement A is incorrect because the IUPAC name is iron(III) hexacyanidoferrate(II), and statement C is incorrect because the average oxidation state of Fe is $\frac{( 4 \times 3 ) + ( 3 \times 2 )}{7} = \frac{18}{7} \approx 2.57$ .

Chemistry - Coordination Chemistry Question with Solution | TestHub

Options:(select one or more)

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