Coordination Chemistry - 01

The central metal ion of K₄[Fe(CN)₆]

• Fe⁺

• Fe²⁺

• Fe3⁺

• Fe4⁺

The coordination entity of K₂[NiCl₄]

• NiCl₄

• K₂[NiCl₄

• [NiCl₄]^2-

• Ni²⁺

In the complex [Co(NH₃)₅Cl]Cl, the coordination number is

• 3

• 5

• 6

• 4

Which one is a cationic complex?

• K₃[Fe(CN)₆]

• Na₂[Ni(EDTA)]

• [Co(en)₂Cl₂]Cl

• K₃[Fe(CN)₅NO]

Pick out the odd one out.

• CN^-

• Cl^-

• SO₄^2-

• C₂O₄^2-

Which one is an anionic complex?

• K[Ag(CN)₂]

• [Ag(NH₃)₂]Cl

• [Ni(CO)₄]

• [Co(NH₃)₆]Cl₃

Which one is a neutral ligand?

• H₂O

• NH₃

• CO

• All of these

Which formula is correct for this complex ion: Sodium hexacyanoferrate(III)?

• S₄[Fe(CN)₆]

• Na₂[Fe(CN6)₆]

• Na₃[Fe(CN)₆]

• Na₄[Fe(CN)₅]

Co-ordination number can be defined as

• Ring forming ligands

• Number of monodentate ligands linked to central atom

• Ligands capable of accepting π-e- density

• Ligand & central metal ion kept in square bracket

Complexes having bidentate ligands are known as

• co-ordination sphere

• chelates

• central metal atom or ion

• complex ion