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 assertion and reason are true, and reason is the correct explanation of the assertion.
2. Both assertion and reason are true, but reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Assertion is false but reason is true.

Subtopic:  VBT, CFT & their Limitations |
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 Assertion (A): The [Fe(NH3)2(CN)4]– shows geometrical isomerism. Reason (R): [Fe(NH3)2(CN)4]– also show optical isomerism.

 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.

Subtopic:  Isomerism in Coordination Compounds |
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Assertion(A): Geometrical isomerism not possible in tetrahedral complexes.
Reason(R): Square planar complex may show geometrical isomerism.

1. Both assertion and reason are true, and reason is the correct explanation of the assertion.

2. Both assertion and reason are true, but reason is not the correct explanation of the assertion.

3. Assertion is true but reason is false.

4. Assertion is false but reason is true.

Subtopic:  Isomerism in Coordination Compounds |
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Assertion: ${\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_{6}\right]}^{3-}$ ion shows magnetic moment corresponding to two unpaired electrons.

Reason: Because it has ${d}^{2}s{p}^{3}$ type hybridization.

1.  Both assertion and reason are true and the reason is the correct explanation of assertion.

2.  Both assertion and reason are true and the reason is not the correct explanation of assertion.

3.  Assertion is true but the reason is false.

4.  Assertion is false but the reason is true.

Subtopic:  VBT, CFT & their Limitations |
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Assertion: Complexes of MX6, and MX5L type (X and L are unidentate ligands) do not show geometrical isomerism.

Reason: Geometrical isomerism is not shown by complexes of coordination number 6.

1. Both assertion and reason are true and the reason is the correct explanation of assertion.

2. Both assertion and reason are true and the reason is not the correct explanation of assertion.

3. Assertion is true but the reason is false.

4. Assertion is false but the reason is true.

Subtopic:  Isomerism in Coordination Compounds |
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Assertion: Linkage isomerism arises in coordination compounds containing ambidentate ligand.

Reason: Ambidentate ligand has two different donor atoms.

1.  Both assertion and reason are true and the reason is the correct explanation of assertion.

2.  Both assertion and reason are true and the reason is not the correct explanation of assertion.

3.  Assertion is true but the reason is false.

4.  Assertion is false but the reason is true.

Subtopic:  Isomerism in Coordination Compounds |
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Assertion (A): $\left[Cr\left({H}_{2}{O}_{6}\right)\right]C{l}_{2}$ and $\left[Fe{\left({H}_{2}O\right)}_{6}\right]C{l}_{2}$ are reducing in nature.

Reason (R): Unpaired electrons are present in their d-orbitals.

1.  Both assertion and reason are true and the reason is the correct explanation of assertion.

2.  Both assertion and reason are true and reason is not the correct explanation of assertion.

3.  Assertion is true but the reason is false.

4.  Assertion is false but reason is true.

Subtopic:  VBT, CFT & their Limitations |
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Assertion: Toxic metal ions are removed by the chelating ligands.

Reason: Chelate complexes tend to be more stable.

1. Both assertion and reason are true and the reason is the correct explanation of assertion.

2. Both assertion and reason are true and the reason is not the correct explanation of assertion.

3. Assertion is true but the reason is false.

4. Assertion is false but the reason is true.

Subtopic:  Organometallic Complexes & their Uses |
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Consider the following statements.
a. The hexaquamanganese(II) ion contains five unpaired electrons, while the hexacyano 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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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.

Subtopic:  VBT, CFT & their Limitations |
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