Write the formula of the first f-block organometallic synthesised.

What is the oxidation state of the metal in the following coordiantion compound?
(i) Ni in Ni(CO)₄    (ii) Co in [Co(CO) ₄]^–

Which part of the d-block metals forms stable metal carbonyls?

If the geometry of [PtCl₄]^2– is square planar, which orbitals of Pt are involved in the bonding?

What is the charge on the complex of Pt²⁺ in which the ligands are - one water molecule, one pyridine molecule and one ethylene diamine molecule?

Name the type of isomerism that occurs in complexes in which both cation and anion are complex ions.

107. Write down the IUPAC names of the following compounds:
(i) [Co(NH₃)₅ONO]Cl₂,    (ii) K₃[Cr(CN)₆]        
(iii) [Cr(NH₃)₅CO₃]Cl

Write formula of the following complexes:
(i) Penta amine chlorocobalt(II)
(ii) Lithium tetrahydro aluminate(III).

Which of the following will give white precipitate with AgNO₃ solution:
[Pt(NH₃)₂Cl₄],   K[Pt(NH₃)Cl₅],    [Pt(NH₃)₃ Cl₃]Cl?

How many moles of ions are formed when one mole of the complex, [Co(NH₃)₄Cl₂]Cl is completely dissociated into ions?