MHT CET20243 May 2024Morning ShiftChemistryCoordination CompoundsActual
Identify the formula of pentaaquaisothiocyanatoiron(III) ion from following.
Options
- AFe [ ( H ₂ O )₅( SCN ) ]³⁺
- B[ Fe ( H ₂ O )₅( NCS ) ]²⁺
- CFe [ ( H ₂ O )₃( NCS )₂ ]³⁺
- D[ Fe [ ( H ₂ O )₂( SCN )₃ ]⁵⁺ .
Correct answer
B. [ Fe ( H ₂ O )₅( NCS ) ]²⁺
Step-by-step solution
Pentaaqua - This means there are five water molecules, ( ( H ₂ O )₅ ), ligated to the central metal. Isothiocyanato - This refers to the presence of one isothiocyanate ion, represented as (NCS). Iron(III) ion - This indicates that the oxidation state of iron is +3. However, because of ligands and their charges, the net charge on the complex ion should be reconciled. Thus, the stated charge in the problem is a critical clue, as this aligns with the options provided. Option B aligns with these points, providing the c