मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Assertion: Cr(HX2O)X6]ClX2 and [Fe(HX2O)X6]ClX2 are reducing in nature. Reason: Unpaired electrons are present in their d-orbitals.

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प्रश्न

Assertion: \[\ce{Cr(H2O)6]Cl2 and [Fe(H2O)6]Cl2}\] are reducing in nature.

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

पर्याय

  • Assertion and reason both are true, reason is correct explanation of assertion.

  • Assertion and reason both are true but reason is not the correct explanation of assertion.

  • Assertion is true, reason is false.

  • Assertion is false, reason is true.

MCQ
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उत्तर

Assertion and reason both are true but reason is not the correct explanation of assertion.

Explanation:

In the complexes, \[\ce{Co}\] exists as \[\ce{Co^{2+}}\] and \[\ce{Fe}\] as \[\ce{Fe^{2+}}\]. Both of the complexes becomes stable by oxidation of metal ion to \[\ce{Co^{3+}}\] and \[\ce{Fe^{3+}}\].

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पाठ 9: Coordination Compounds - Exercises [पृष्ठ १२७]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 9 Coordination Compounds
Exercises | Q V. 42. | पृष्ठ १२७

संबंधित प्रश्‍न

Classify the following ligands into monodentate and polydentate —

  1. Ammonia
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  3. Ethylene diamine
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When 1 mol \[\ce{CrCl3.6H2O}\] is treated with excess of \[\ce{AgNO3}\], 3 mol of \[\ce{AgCl}\] are obtained. The formula of the complex is ______.


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Column I (Complex ion) Column II (Colour)
A. \[\ce{[Co(NH3)6]^{3+}}\] 1. Violet
B. \[\ce{[Ti(H2O)6]^{3+}}\] 2. Green
C. \[\ce{[Ni(H2O)6]^{2+}}\] 3. Pale blue
D. \[\ce{(Ni(H2O)4 (en)]^{2+} (aq)}\] 4. Yellowish orange
  5. Blue

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What is meant by the chelate effect? Give an example.


Explain the following, giving two examples: 

Homoleptic


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Give two examples of ambidentate ligands.


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