221.

Pick out the correct statement with respect
[Mn(CN)_6]^3–

• It is sp³d² hybridised and octahedral

• It is sp³d² hybridised and tetrahedral

• It is d²sp³ hybridised and octahedral

• It is d²sp³ hybridised and octahedral

Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :

Column I		Column II
a.	Co3+	i.
b.	Cr3+	ii.	$\sqrt{35} BM$
c.	Fe3+	iii.	$\sqrt{3} BM$
d.	Ni2+	iv.	$\sqrt{24} BM$
		v.	$\sqrt{15} BM$

• a	b	c	d
  iv	v	ii	i

• a	b	c	d
  i	ii	iii	iv

• a	b	c	d
  iii	v	i	ii

• a	b	c	d
  iv	i	ii	iii

Which one of the following ions exhibits d-d transition and paramagnetism as well?

• $Cr{O}_4^{2-}$

• $C{r}_2{O}_7^{2-}$

• $Mn{O}_4^{2-}$

• $Mn{O}_4^{-}$

Iron carbonyl, Fe(CO)₅ is

• Tetranuclear

• Mononuclear

• Dinuclear

• Trinuclear

The type of isomerism shown by the complex [CoCl₂(en)₂] is

• Geometrical isomerism

• Coordination isomerism

• Linkage isomerism

• Ionization isomerism

The geometry and magnetic behaviour of the complex [Ni(CO)₄] are

• Square planar geometry and diamagnetic

• Tetrahedral geometry and diamagnetic

• Tetrahedral geometry and paramagnetic

• Square planar geometry and paramagnetic

Consider the following species:
CN⁺, CN^–, NO and CN

Which one of these will have the highest bond order?

• NO

• CN^-

• CN

• CN⁺

Which of the following compound is not coloured?

• Na₂CuCl

• Na₂Cd.Cl₄

• FeSO₄

• VI₃

Which of the following coordination compounds would exhibit optical isomerism?

• Pentamminentirocobalt (III) iodide

• Tris-(ethylenediamine) cobalt (III) bromide

• Trans-dicyanobis (ethylenediamine)

• Diamminedinitroplatinum (II)

Sulphur reacts with chlorine in 1:2 ratio and forms X. Hydrolysis of X gives a sulphur compound Y. The hybridization of the central atom in the anion Y is

• sp³

• sp²

• sp³d

• sp