CO ORDINATION CHEMISTRY -1

A transition metal complex shows a magnetic moment of 5.20BM at room temperature. The number of unpaired electrons in the metal is

• 3

• 4

• 5

• 2

Which of the following complexes is diamagnetic?

• [Ni(H₂O)₆]⁺²

• [Ni(CN)₄]^-2

• [Ni(NH₃)₄]⁺²

• [NiCl₄]^-2

Which of the following is paramagnetic and square planar?

• [Ni(CN)₄]^-2

• [Fe(CN)₄6^-3

• [Cu(NH₃)₄]SO₄

• [Ni(NH₃)₄]SO₄

t_2g orbitals are

• d_xy , d_yz, d_zx

• d_x2-y2 and d_z2

• P_{x ,} p_y , p_z

• s and p

Which of the following dissolves in NH₃?

• PbCl₂

• BaSO₄

• Hg₂Cl₂

• AgCl

Which of the following is a double salt?

• CuSO₄.4NH₃

• Fe(CN)₂.4KCN

• CoCl₃.3NH₃

• KCl.MgCl₂.6H₂O

In a square planar complex with ligands on X and Y axis, the highest energy metal d orbital is

• d_yz

• d_z2

• d_xy

• d_x2-y2

The complex which exhibit sp³d² hybridisation is

• [Fe(CN)₆]^-4

• [Fe(CN)₆]^-3

• [Mn(CN)₆]^-3

• [FeF₆]^-3

Among [Ni(CO)₄] (I), [Ni(CN)₄]^-2 (II), [NiCl₄]^-2 (III)

• I,II are diamagnetic and III is paramagnetic

• I, III are diamagnetic and II is paramagnetic

• II, III are diamagnetic and I is paramagnetic

• I is diamagnetic and II, III are paramagnetic

The number of unpaired electrons in the complex ion [CoF₆]^-3

• 3

• 0

• 4

• 2