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Complex compounds are molecular compounds which retain their identities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called co-ordination compounds because certain groups called ligands are attached to the central metal ion by co-ordinate or dative bonds. Co-ordination compounds exhibit isomerism, both structural and stereoisomerism. The structure, magnetic property, colour and electrical properties of complexes are explained by various theories.
Arrange the following compounds in order of their molar conductance :
(i) K[Co(NO2)4(NH3)2]
(ii) [Cr(ONO)3(NH3)3]
(iii) [Cr(NO2)(NH3)5]3[Co(NO2)6]2
(iv) Mg[Cr(NO2)5(NH3)]
  • a)
    (ii) < (iv)="" />< (i)="" />< />
  • b)
    (i) < (ii)="" />< (iii)="" />< />
  • c)
    (ii) < (i)="" />< (iii)="" />< />
  • d)
    (iv) < (iii)="" />< (ii)="" />< />
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Complex compounds are molecular compounds which retain their identiti...
Molar conductance will depend on ionic mobility and no of ions produced per unit species on dissociation
(i) K[Co(NO2)4(NH3)2] - 2 Ions / molecule
(ii) [Cr(ONO)3(NH3)3] - 1 unit / molecule
(iii) [Cr(NO2)(NH3)5]3[CO(NO2)6]2 - 5 Ions / molecule
(iv) Mg[Cr(NO2)5(NH3)] - 2 Ions / molecule
out of (i) and (iv) K+ and Mg2+ , Mg2+ due to high solvation will have lower Ionic mobility & lower molar conductance. Molar conductance will have order (ii) < (iv)="" />< (i)="" />< />
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Complex compounds are molecular compounds which retain their identiti...
Arranging the compounds in order of their molar conductance:

To arrange the compounds in order of their molar conductance, we need to understand the factors that affect the molar conductance of a compound. The molar conductance of a compound depends on the number of ions produced when it is dissolved in water.

The molar conductance of an ionic compound can be calculated using the equation:

Molar Conductance (Λ) = (Conductivity of the solution) / (Concentration of the solution)

The higher the number of ions produced, the higher the molar conductance. In the case of complex compounds, they do not dissociate completely into simple ions but instead form complex ions. Therefore, the molar conductance of complex compounds is generally lower than that of ionic compounds.

Now, let's analyze each compound and determine their molar conductance:

(i) K[Co(NO2)4(NH3)2]:
This compound contains a complex ion [Co(NO2)4(NH3)2]- and a potassium ion (K+). When dissolved in water, it will dissociate into these ions. The complex ion [Co(NO2)4(NH3)2]- does not dissociate further. Therefore, the molar conductance of this compound will be relatively lower.

(ii) [Cr(ONO)3(NH3)3]:
This compound contains a complex ion [Cr(ONO)3(NH3)3] and does not contain any simple ions. Therefore, the molar conductance of this compound will be lower than that of ionic compounds.

(iii) [Cr(NO2)(NH3)5]3[Co(NO2)6]2:
This compound contains two complex ions: [Cr(NO2)(NH3)5]3- and [Co(NO2)6]2-. When dissolved in water, it will dissociate into these complex ions. Both complex ions do not dissociate further. Therefore, the molar conductance of this compound will be lower.

(iv) Mg[Cr(NO2)5(NH3)]:
This compound contains a magnesium ion (Mg2+) and a complex ion [Cr(NO2)5(NH3)]. When dissolved in water, it will dissociate into these ions. The complex ion [Cr(NO2)5(NH3)] does not dissociate further. Therefore, the molar conductance of this compound will be relatively lower.

Conclusion:
Based on the analysis above, we can conclude that the compounds can be arranged in order of their molar conductance as follows:

(i) K[Co(NO2)4(NH3)2]
(ii) [Cr(ONO)3(NH3)3]
(iii) [Cr(NO2)(NH3)5]3[Co(NO2)6]2
(iv) Mg[Cr(NO2)5(NH3)]

Therefore, the correct answer is option 'A'.
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Complex compounds are molecular compounds which retain their identities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called co-ordination compounds because certain groups called ligands are attached to the central metal ion by co-ordinate or dative bonds. Co-ordination compounds exhibit isomerism, both structural and stereoisomerism. The structure, magnetic property, colour and electrical properties of complexes are explained by various theories.Arrange the following compounds in order of their molar conductance :(i) K[Co(NO2)4(NH3)2](ii) [Cr(ONO)3(NH3)3](iii) [Cr(NO2)(NH3)5]3[Co(NO2)6]2(iv) Mg[Cr(NO2)5(NH3)]a)(ii) b)(i) c)(ii) d)(iv) Correct answer is option 'A'. Can you explain this answer?
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Complex compounds are molecular compounds which retain their identities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called co-ordination compounds because certain groups called ligands are attached to the central metal ion by co-ordinate or dative bonds. Co-ordination compounds exhibit isomerism, both structural and stereoisomerism. The structure, magnetic property, colour and electrical properties of complexes are explained by various theories.Arrange the following compounds in order of their molar conductance :(i) K[Co(NO2)4(NH3)2](ii) [Cr(ONO)3(NH3)3](iii) [Cr(NO2)(NH3)5]3[Co(NO2)6]2(iv) Mg[Cr(NO2)5(NH3)]a)(ii) b)(i) c)(ii) d)(iv) Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Complex compounds are molecular compounds which retain their identities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called co-ordination compounds because certain groups called ligands are attached to the central metal ion by co-ordinate or dative bonds. Co-ordination compounds exhibit isomerism, both structural and stereoisomerism. The structure, magnetic property, colour and electrical properties of complexes are explained by various theories.Arrange the following compounds in order of their molar conductance :(i) K[Co(NO2)4(NH3)2](ii) [Cr(ONO)3(NH3)3](iii) [Cr(NO2)(NH3)5]3[Co(NO2)6]2(iv) Mg[Cr(NO2)5(NH3)]a)(ii) b)(i) c)(ii) d)(iv) Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Complex compounds are molecular compounds which retain their identities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called co-ordination compounds because certain groups called ligands are attached to the central metal ion by co-ordinate or dative bonds. Co-ordination compounds exhibit isomerism, both structural and stereoisomerism. The structure, magnetic property, colour and electrical properties of complexes are explained by various theories.Arrange the following compounds in order of their molar conductance :(i) K[Co(NO2)4(NH3)2](ii) [Cr(ONO)3(NH3)3](iii) [Cr(NO2)(NH3)5]3[Co(NO2)6]2(iv) Mg[Cr(NO2)5(NH3)]a)(ii) b)(i) c)(ii) d)(iv) Correct answer is option 'A'. Can you explain this answer?.
Solutions for Complex compounds are molecular compounds which retain their identities even when dissolved in water. They do not give all the simple ions in solution but instead furnish complex ions. The complex compounds are often called co-ordination compounds because certain groups called ligands are attached to the central metal ion by co-ordinate or dative bonds. Co-ordination compounds exhibit isomerism, both structural and stereoisomerism. The structure, magnetic property, colour and electrical properties of complexes are explained by various theories.Arrange the following compounds in order of their molar conductance :(i) K[Co(NO2)4(NH3)2](ii) [Cr(ONO)3(NH3)3](iii) [Cr(NO2)(NH3)5]3[Co(NO2)6]2(iv) Mg[Cr(NO2)5(NH3)]a)(ii) b)(i) c)(ii) d)(iv) Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
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