MHT CET202619 April 2026Evening ShiftChemistryCoordination CompoundsActual
Which from following coordinate complexes contains neutral ligand ?
Options
- APentacarbonyliron (0)
- BHexacyanoferrate (II) ion
- CTrioxalatocobaltate (III) ion
- DSodium hexanitrocobaltate (III)
Correct answer
A. Pentacarbonyliron (0)
Step-by-step solution
Pentacarbonyliron (0) has the formula [Fe(CO)₅] . The ligand present is carbonyl (CO), which is a neutral molecule. Hexacyanoferrate (II) ion has the formula [Fe(CN)₆]⁴⁻ . The ligand is cyanide ( CN^- ), which is an anionic ligand. Trioxalatocobaltate (III) ion has the formula [Co(C₂O₄)₃]³⁻ . The ligand is oxalate ( C₂O₄²⁻ ), which is an anionic ligand. Sodium hexanitrocobaltate (III) has the formula Na₃[Co(NO₂)₆] . The ligand is nitro ( NO₂^- ), which is an anionic ligand. Therefore, only pentacarbonyliron (0) con