MHT CET202617 April 2026Morning ShiftChemistryCoordination CompoundsActual

What is EAN of Co in [ Co ( NH ₃)₆]³⁺ ?

Options

Correct answer

C. 36

Step-by-step solution

The effective atomic number (EAN) is calculated using the formula: EAN = Z - O.S. + 2 C.N. For the complex [ Co ( NH ₃)₆]³⁺ , the central metal is cobalt. Atomic number of Co ( Z ) = 27 Oxidation state of Co ( O.S. ) = +3 Coordination number ( C.N. ) = 6 Substituting the values into the formula: EAN = 27 - 3 + 2 6 EAN = 24 + 12 = 36 Answer: 36

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