It is an experimental fact that DMG + Ni(ll)salt + NH4OH  Red precipitate Which of the following is wrong about this red precipitate?

(1)  It is a non-ionic complex

(2)  It has a square planar geometry

(3)  It has tetrahedral geometry

(4)  It is a diamagnetic complex

Subtopic:  VBT, CFT & their Limitations |
 61%
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Which among the following species is colored as per CFT?

1.  TiH2O54+

2.  CrNH363+

3.  KVF6

4.  NH42TiCl6

Subtopic:  VBT, CFT & their Limitations |
 82%
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Among i CoNH36CI3,iiNiNH36CI2,iiiCrH2O6CI3,ivFeH2O6CI2, the diamagnetic complex is

1.  i

2.  ii

3.  iii

4.  iv

Subtopic:  VBT, CFT & their Limitations |
 66%
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For which of the following complexes IUPAC names is not correctly assigned?

1.  NaPtNH3BrClNO2-Sodium amminebromidochlorido nitrito-N-pIatinate(II)

2.  CuCl2O = CNH222-Dichlorobis (dicarboxido tetraamine) copper (II)

3.   PtCl3η2 - C2H4- —Trichlorido (η2 — ethylene) platinate(ll) ion

4.  FeClCN4O24-—Chloridotetracynosuperoxoferrate (II) ion

Subtopic:  Introduction, Classification and Nomenclature |
 52%
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The number of isomers of CodienCI3 is (where 'dean' is diethylene triamine)

1.  2

2.  3

3.  44.  5

Subtopic:  Isomerism in Coordination Compounds |
 53%
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Choose the incorrect statement regarding the complex NiCl2PR32
(1) When R group in PR3 is C6H5 then complex will be tetrahedral

(2) When R group in PR3 is cyclohexyl then complex will be square planar

(3) When R group is H then equilibrium mixture of tetrahedral and square planar form is obtained

(4) When R group is H then complex will be tetrahedral only

Subtopic:  VBT, CFT & their Limitations |
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The incorrect statement about Re—Re bonding in Re2X82- are,
(1) Re—Re bond length is abnormally short

(2) Re—Re bond is comprised of one G, two qt and
one ö—bond

(3) If Re—Re bond points along the z-axis, then the square planar ReX4 unit will use s, Px, Pyand dx2 - y2 orbitals for the formation of four Re—X σ bonds

(4) dxy orbitals will overlap to form δ—bond

Subtopic:  VBT, CFT & their Limitations |
 66%
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The Crystal Field Stabilization Energy (CFSE) and the spin-only magnetic moment in Bohr Magneton (BM) for the complex K3FeCN6 are, respectively,

1.  0.00 and 35 BM

2.  -2.00 and 3 BM

3.  -0.40 and 24 BM

4.  -2.40 and 0 BM

Subtopic:  VBT, CFT & their Limitations |
 69%
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Zn2+ + 4NH3  ZnNH342+. The concentration of free Zn2+ ions in a solution of the complex ion ZnNH342+ can be increased significantly by the addition of

1.  H2O

2.  HCl(aq)

3.  NH3aq

4.  NH4Claq

Subtopic:  Introduction, Classification and Nomenclature |
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Given the following pair of isomers:
[Cr(NH3)6][Cr(NO2)6] and
[Cr(NH3)4(NO2)2][Cr(NH3)2(NO2)4]
Aside from X-ray diffraction, how could the following pairs of isomers be distinguished from one another?

1. Cryoscopic method
2. Measuring their molar conductance
3. Measuring their magnetic moments
4. Observing their colors

Subtopic:  Introduction, Classification and Nomenclature |
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