MHT CET202620 April 2026Evening ShiftChemistryCoordination CompoundsActual
Which of the following complex is neutral?
Options
- AK ₃[ Fe(CN) ₅ NO ]
- B[ Zn(NH ₃)₄]²⁺
- C[ Co(NH ₃)₅ Cl ]²⁺
- D[ Ni(CO) ₄]
Correct answer
D. [ Ni(CO) ₄]
Step-by-step solution
A neutral complex is a coordination compound that does not have an overall electrical charge and does not dissociate into ions in solution. K ₃[ Fe(CN) ₅ NO ] is an ionic complex that dissociates into 3 K ^+ and [ Fe(CN) ₅ NO ]³⁻ ions. [ Zn(NH ₃)₄]²⁺ is a cationic complex with a +2 charge. [ Co(NH ₃)₅ Cl ]²⁺ is a cationic complex with a +2 charge. [ Ni(CO) ₄] has no overall charge and no counter ions, making it a neutral complex. Answer: [ Ni(CO) ₄]