MHT CET202618 April 2026Evening ShiftChemistryCoordination CompoundsActual

What is EAN for metal ion in [ Fe(CN) ₆]³⁻ ?

Options

Correct answer

C. 35

Step-by-step solution

The atomic number of iron (Fe) is 26 . Let the oxidation state of Fe in [ Fe(CN) ₆]³⁻ be x . x + 6(-1) = -3 x = +3 The formula for Effective Atomic Number (EAN) is: EAN = Z - Oxidation state + 2 ( Coordination number ) EAN = 26 - 3 + 2 6 EAN = 23 + 12 = 35 Answer: 35

Practice Coordination Compounds on Quantrex Academy →

More from Coordination Compounds

Identify the complex which exhibits all 3 characteristics; paramagnetic; high spin configuration; octahedral geometry 2026 Which one of the following complex-isomerism pair matches correctly? 2026 Match the Coordination compounds in Column I with the type of stereoisomerism given in Column II exhibited by them. Column I Column II A. [ Pt ( NH ₃)₂ Cl ₂] P. fac-mer B. Ni [( NH 2026 The Crystal Field Stabilisation energy of (i) [ CoF ₆]³⁻ and (ii) [ Fe ( H ₂ O )₆]³⁺ are ----- and ------- respectively. 2026 Which one of the following octahedral complexes has the highest spin-only magnetic moment? 2026 Metal-ligand -bond formation in Mn ₂( CO )₁₀ and [ MnO ₄]^- requires electron-pair donation between metal and ligand orbitals. Which one of the following represents the direction o 2026 Which of the following is the most stable complex ion? 2026 How many ions per molecule are produced from the complex [ Co(NH ₃ ) ₆] Cl ₂ in solution? 2026 Full Coordination Compounds list All MHT CET PYQs