The number of unpaired electrons in the square planar [Pt(CN)4]2− ion is-

1. One
2. Zero
3. Two
4. Three

Subtopic:  VBT, CFT & their Limitations |
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Consider the following statements.
 
a. The hexaquamanganese(II) ion contains five unpaired electrons, while the hexacyanomanganese(II) ion contains only one unpaired electron.
b. [Mn(H2O)6]2+ is an outer sphere complex, and [Mn(CN)6]4− is an inner sphere complex.
c. Arrangement of the electrons in [Mn(CN)6]4− is t2g5eg0.

The correct statement(s) is/are
1. a, b only
2. b, c only
3. a, b, c
4. None of the above
Subtopic:  VBT, CFT & their Limitations |
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The overall complex dissociation equilibrium constant for the Cu(NH3)42+ ion is-

(Given that β4 for this complex is 2.1 × 1013 )

1. 4.4×10−12
2. 1.5×10−14
3. 1.8×10−12
4. 4.7×10−14
Subtopic:  VBT, CFT & their Limitations |
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The type(s) of isomerism exhibited by the [Co(en)3]Cl3  complexes is/are:
1. Geometrical isomerism
2. Optical isomerism
3. Linkage isomerism
4. Both 1 and 2
Subtopic:  Isomerism in Coordination Compounds |
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The type(s) of isomerism exhibited by the following complex is-
[Co(NH3)5(NO2)](NO3)2

1. Geometrical isomerism
2. Ionisation isomerism
3. Optical isomerism
4. All of the above
Subtopic:  Isomerism in Coordination Compounds |
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The type(s) of isomerism exhibited by the following complex is-
 [Pt(NH3)(H2O)Cl2]
1. Geometrical isomerism
2. Optical isomerism
3. Linkage isomerism
4. Both 1 and 2
Subtopic:  VBT, CFT & their Limitations |
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The correct statement among the following is-

1. [Co(NH3)6]3+ and [Ni(NH3)6]2+, both are inner orbital complexes.
2. [Co(NH3)6]3+ and [Ni(NH3)6]2+ both are outer orbital complexes.
3. [Co(NH3)6]3+ is an inner orbital complex whereas [Ni(NH3)6]2+ is an outer orbital complex. 
4. [Co(NH3)6]3+ is an outer orbital complex whereas [Ni(NH3)6]2+ is an inner orbital complex. 
Subtopic:  VBT, CFT & their Limitations |
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Select the correct option based on statements below:
I: [Fe(H2O)6]3+ is strongly paramagnetic whereas [Fe(CN)6]3− is weakly paramagnetic.
II: [Fe(H2O)6]3+ has 4 unpaired electrons while [Fe(CN)6]3− has 5 unpaired electrons.

1. Both I and II are true.
2. I is true and II is false.
3. Both I and II are false.
4. I is false but II is true.

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Given below are two statements: 

Assertion (A): [NiCl4]2− is paramagnetic while [Ni(CO)4] is diamagnetic though both are tetrahedral.
Reason (R): CO is a strong field ligand, thus pairing of electrons takes place in [Ni(CO)4].

1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. (A) is false but (R) is true.

 
 

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Statement I: [Ni(CN)4]2− structure is tetrahedral and diamagnetic in nature.
Statement II: [NiCl4]2−  structure is tetrahedral and diamagnetic in nature.

1. Both Statement I and II are true.
2. Statement I is true and statement II is false.
3. Both Statement I and II are false.
4. Statement I is false, Statement II is true.
Subtopic:  VBT, CFT & their Limitations |
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