MHT CET Medical202621 April 2026Evening ShiftChemistryCoordination CompoundsActual
Identify from the following a coordinate complex containing neutral ligand in it.
Options
- APentacarbonyliron(0)
- BHexacyanoferrate(II)ion
- CTrioxalatocobaltate(III)ion
- DSodiumhexanitrocobaltate(III)
Correct answer
A. Pentacarbonyliron(0)
Step-by-step solution
Pentacarbonyliron(0) is [Fe(CO)₅] . The ligand is carbonyl ( CO ), which is a neutral molecule. Hexacyanoferrate(II) ion is [Fe(CN)₆]⁴⁻ . The ligand is cyanide ( CN^- ), which is anionic. Trioxalatocobaltate(III) ion is [Co(C₂O₄)₃]³⁻ . The ligand is oxalate ( C₂O₄²⁻ ), which is anionic. Sodium hexanitrocobaltate(III) is Na₃[Co(NO₂)₆] . The ligand is nitro ( NO₂^- ), which is anionic. Thus, pentacarbonyliron(0) contains a neutral ligand. Answer: Pentacarbonyliron(0)