The existence of two different coloured complexes with the composition of [Co(NH3)4Cl2] is due to:

1. Linkage isomerism 2. Geometrical isomerism
3. Coordination isomerism 4. Ionisation isomerism

Subtopic:  Isomerism in Coordination Compounds |
 60%
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AIPMT - 2010

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Which of the following does not show optical isomerism?(en = ethylenediamine)
1. [Co(en)2Cl2]+
2. [Co(NH3)3Cl3]
3. [Co(en)Cl2(NH3)2]+
4. [Co(en)3]3+
Subtopic:  Isomerism in Coordination Compounds |
 66%
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AIPMT - 2009

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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)
1. [Sc(H2O)3(NH3)3]3+
2. [Ti(en)2 (NH3)2]4+
3. [Cr(NH3)6]3+
4. [Zn(NH3)6]2+

 

Subtopic:  VBT, CFT & their Limitations |
 76%
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Which of the following complexes exhibits the highest paramagnetic behavior ? 
where gly = glycine, en = ethylene Jiamine and bpy = bipyridyl moieties 
(At no : Ti= 22 V = 21! Fe = 26, Co = 27)

1.  Vgly2OH2NH32+

2.  Feen bpy NH322+

3.  CoOX2OH2-

4.  TiNH363+

Subtopic:  Ligands |
From NCERT
AIPMT - 2008

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In which of the following coordination entities the magnitude of \(\Delta_{oct}\)(CFSE in the octahedral field) will be maximum? 
(Atomic number Co = 27)

1.  CoH2O63+

2. [Co(NH3)6]3+

3.  CoCN63-

4.  CoC2O433-

Subtopic:  Ligands |
 71%
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AIPMT - 2008

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Which of the following will give a pair of enantiomorphs? 
(en = NH2 CH2CH2 NH2)

1. [Co(NH3)4Cl2]NO2

2. [Cr(NH3)6][Co(CN)6]

3. [Co(en)2Cl2]Cl

4. [Pt(NH3)4][PtCl6]

Subtopic:  Isomerism in Coordination Compounds |
 71%
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AIPMT - 2007

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[Co(NH3)4(NO2)2]Cl exhibits :

1. Linkage isomerism, ionization isomerism and optical isomerism

2. Linkage isomerism, ionization isomerism and geometrical isomerism

3. Ionization isomerism,geometrical isomerism and optical isomerism

4. Linkage isomerism, geometrical isomerism and optical isomerism

 

Subtopic:  Isomerism in Coordination Compounds |
 82%
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AIPMT - 2006

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What is the correct electronic configuration of the central atom in K4FeCN6 based on crystal field theory?

1.  e4 t22

2.  t2g  4 eg2

3.  t2g  6 eg0

4.  e3 t23

Subtopic:  VBT, CFT & their Limitations |
 84%
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NEET - 2019

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Which of the following system has maximum number of unpaired electrones –

1. d5 (Octahedral, low spin)

2. d8 (Tetrahedral)

3. d6 (Octahedral, low spin)

4. d3 (Octahedral)

Subtopic:  VBT, CFT & their Limitations |
 58%
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A complex shown below can exhibit –

1. Geometrical isomerism only
2. Optical isomerism only
3. Both Optical and geometrical isomerism
4. None of the above

Subtopic:  Isomerism in Coordination Compounds |
 73%
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