Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?

(a) [Ni(NH3)6]2+                  (b) [Zn(NH3)6]2+

(c) [Cr(NH3)6]3+                  (d) [Co(NH3)6]3+

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VBT & CFT, Limitation /Hybridisation
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The d-electron configurations of Cr2+, Mn2+, Fe2+ and CO2+ are d4, d5, d6 and d7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour?

(At. no. Cr = 24, Mn =25, Fe=26, CO=27)

(a) [Fe(H2O)6]2+

(b) [Co(H2O)6]2+

(c) [Cr(H2O)6]2+

(d) [Mn(H2O)6]2+

 

 

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VBT & CFT, Limitation /Hybridisation
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Of the following complex ions, which is diamagnetic in nature?

(a) [Ni(CN)4]2-                       (b) [CuCl4]2-

(c) [CoF6]3-                           (d) [NiCl4]2-

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VBT & CFT, Limitation /Hybridisation
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The complexes [CO(NH3)6] [Cr(CN)6] and [Cr(NH3)6] [Co(CN)6] are the examples of which type of isomerism?

(a) lonisation isomerism
(b) Coordination isomerism
(c) Geometrical isomerism
(d) Linkage isomerism

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The complex, [Pt(Py)(NH3)BrCl] will have how many geometrical isomers?
(a) 4
(b) 0
(c) 2
(d) 3

 

Concept Questions :-

Isomer in Coordination Compound
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Which of the following complex ions is not expected to absorb visible light ?

(a) [Ni(CN)4]2-

(b) [Cr(NH3)6]3+

(c) [Fe(H2O)6]2+

(d) [Ni(H2O)6]2+

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VBT & CFT, Limitation /Hybridisation
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The existence of two different coloured complexes with the composition of [Co(NH3)4Cl2]+ is due to :-

(a) linkage isomerism
(b) geometrical isomerism
(c) coordination isomerism
(d) ionisation isomerism

Concept Questions :-

Isomer in Coordination Compound
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Which of the following does not show optical isomerism ? 

(en-ethylenediamine)

(a) [Co(en)2Cl2]+
(b) [Co(NH3)3Cl3]0
(c) [Co(en)Cl2(NH3)2]+
(d) [Co(en)3]3+

Concept Questions :-

Isomer in Coordination Compound
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Which of the following complex ions is expected to absorb visible light?

(At. no. Zn =30, Sc =21, Ti =22, Cr=24)

(a) [Sc(H2O)3(NH3)3]3+

(b) [Ti(en)2(NH3)2]4+

(c) [Cr(NH3)6]3+

(d) [Zn(NH3)6]2+

Concept Questions :-

VBT & CFT, Limitation /Hybridisation
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Which of the following complexes exhibits the highest paramagnetic behaviour?

where gly = glycine, en = ethylenediamine and bpy = bipyridyl moieties

(At no : Ti = 22, V = 23, Fe= 26, Co = 27)

(a) [V(gly)2 (OH)2(NH3)2]+

(b) [Fe(en)(bpy)NH3)2]2+

(c) [Co(OX)2(OH)2]-

(d) [Ti(NH3)6]3+

Concept Questions :-

VBT & CFT, Limitation /Hybridisation
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