COMEDK2016ChemistryCoordination Compounds
Which of the following statements is incorrect?
Options
- AIn K ₄ [ Fe ( CN )₆ ] the ligand has satisfied both primary and secondary valencies of ferrous ion.
- BIn [ Cu ( NH ₃ )₄ ] SO ₄ , the ligand has satisfied only the secondary valency of copper.
- CIn K ₃ [ Fe ( CN )₆ ] , the ligand has satisfied only the secondary valency of ferric ion.
- DIn K ₃ [ Fe ( CN )₆ ] , the ligand has satisfied both primary and secondary valencies of ferric ion.
Correct answer
D. In K ₃ [ Fe ( CN )₆ ] , the ligand has satisfied both primary and secondary valencies of ferric ion.
Step-by-step solution
In K ₃ [ Fe ( CN )₆ ] , the ligand has satisfied both primary and secondary valencies of ferric ion. The +3 charge of ferric ion is satisfied by negative charge on cyanide ion. The coordination sphere's secondary valency is satisfied by six cyanide ligands.