The correct representation of Potassium tris(oxalato)chromate(III) is:

1. K2Cr(C2O4)3
2. K3Cr(C2O4)3
3. K3Cr(C2O4)2
4. K2Cr(C2O4)4

Subtopic:  Introduction, Classification and Nomenclature |
 90%
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The correct splitting diagram of d orbitals in an octahedral crystal field is:

1. 2.
3. 4.  
None of these.
 

Subtopic:  VBT, CFT & their Limitations |
 87%
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Optical isomerism is exhibited by among the following is/are:

1. [Cr(Ox)3]3+ 2. [PtCl2(en)2]2+
3. [Cr(NH3)2Cl2en]+ 4. All of the above
Subtopic:  Isomerism in Coordination Compounds |
 78%
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The correct representation of tetrahydroxidozincate (II) is:
1. \([Zn(OH)_4]^{2-}\)
2. \([Zn(OH)_4]^{-}\)
3. \([Zn(OH)_4]^{3-}\)
4. \([Zn(OH)_4]\)

Subtopic:  Introduction, Classification and Nomenclature |
 92%
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A solution of [Ni(H2O)6]2+ is green, but a solution of [Ni(CN)4]2– is colorless because:

1. There are paired electrons in [Ni(H2O)6]2+ while all electrons are unpaired in [Ni(CN)4]2–
2. There are unpaired electrons in [Ni(H2O)6]2+ while all electrons are paired in [Ni(CN)4]2–
3. There are unpaired electrons in [Ni(H2O)6]2+ and [Ni(CN)4]2–
4. None of the above.

Subtopic:  Introduction, Classification and Nomenclature |
 87%
From NCERT
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[Cr(NH3)6]3+ is paramagnetic ,while Ni(CN)42- is diamagnetic because:

1. Electrons in the 3d orbitals remain unpaired in Ni(CN)42-
2. Electrons in the 3d orbitals remain unpaired in [Cr(NH3)6]3+
3. Electrons in the 3p orbitals remain unpaired in [Cr(NH3)6]3+
4. Electrons in the 3p orbitals remain unpaired in Ni(CN)42-

Subtopic:  VBT, CFT & their Limitations |
 89%
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The crystal field splitting energy is:

1. The heat of formation between the two levels (eg and t2g)
2. The combined pairing energy of the two levels (eg and t2g)
3. The combined energy of the three levels in octahedral 
4. The combined energy of the two levels (eg and t2g

Subtopic:  VBT, CFT & their Limitations |
 59%
From NCERT
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Total number of optical isomers [Pt(NH3)(Br)(Cl)(py)] can show:

1. 3

2. 2

3. 1

4. 0

Subtopic:  Introduction, Classification and Nomenclature |
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A metal ion present in vitamin B12 is:

1. Fe(II) 2. Co(III)
3. Zn(II) 4. Ca(II)
Subtopic:  Organometallic Complexes & their Uses |
 77%
From NCERT
AIPMT - 2003
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The hypothetical complex
chlorodiaquatriamminecobalt(III) chloride can be
represented as:

1. CoClNH33H2O2Cl2

2. CoNH33H2OCl3

3. CoNH23H2O2Cl

4. CoNH33H2O3Cl3

Subtopic:  Introduction, Classification and Nomenclature |
 79%
From NCERT
AIPMT - 2002
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