Coordination Complexes

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Coordination Complexes - 02

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Q8. The solution of K4[Fe(CN)6] in water will *

1 分

give a test K+

give a test Fe+2

give a test of CN–

It does not give any test

Q9. In the coordination compound, K4[Ni(CN)4], the oxidation state of nickel is *

1 分

Q3. The primary valency of CrCl3 is *

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Q4. One mole of the complex compound Co(NH3)5Cl3, gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of AgNO3 solution to yield two moles of AgCl (s). The structure of the complex is *

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[Co(NH3)3Cl3].2NH3

[Co(NH3)4Cl2].Cl.NH3

[Co(NH3)5Cl].Cl2

[Co(NH3)6].Cl3

Q5. When AgNO3 is added to a solution of Co(NH3)5Cl3, the precipitate of AgCl shows two ionisable chloride ions. This means *

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Two chlorine atoms satisfy primary valency and one secondary valency

One chlorine atom satisfies primary as well as secondary valency

Three chlorine atoms satisfy primary valency

Three chlorine atoms satisfy secondary valency

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Q6. K4[Fe(CN)6] is a *

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Double salt

Complex compound

Acid

Base

Q7. The number of ions formed on dissolving one molecule of Mohr's Salt - *

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Q10. The coordination number of a central metal atom in a complex is determined by *

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the number of ligands around a metal ion bonded by sigma and pi-bonds both

the number of ligands around a metal ion bonded by pi-bonds

the number of ligands around a metal ion bonded by sigma bonds

the number of only anionic ligands bonded to the metal ion

Q1. According to the postulates of Werner for coordination compounds *

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primary valency is ionizable

secondary valency is ionizable

primary and secondary valencies are non-ionizable

only primary valency is non-ionizable.

Q2. Which of the following postulates of Werner’s theory is incorrect? *

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Primary valencies are satisfied by negative and positive ions.

Primary valencies are satisfied by neutral molecules or negative ions.

Secondary valence is equal to the coordination number

The ions/ groups bound by the secondary linkages to the metal have charecteristic spatial arrangements.

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