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Coordination compounds plays many import...

Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning
Arrange of the following in order of decreasing number of unpaired electrons
(I) `[Fe(H_(2)O))_(6)]^(2+)`
(II) `[Fe(CN)_(6)]^(3-)`
(III) `[Fe(CN)_(6)]^(4-)`
(IV) `[fe(H_(2)O)_(6)]^(3+)`
(a) IV,I,II,III
(b) `I,II,III,IV`
(c) `III,II,IIV`
(d) II,III,I,IV` .

A

S, P, Q, R

B

P, Q, R, S

C

R, Q, P, S

D

Q, R, P, S

Text Solution

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The correct Answer is:
A
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Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning Extraction of Ag from sulphide ore and removal of unreacted silver from photographic plate involve complexes: (a) [Ag(S_(2)O_(3))_(2)]^(3-) ion both (b) [Ag(CN)_(2)]^(Θ) in both (c) [Ag(S_(2)O_(3))]^(3-) , [Ag(CN)_(2)]^(Θ) (d) [Ag(CN)_(2)]^(Θ) ,[Ag_(2)(S_(2)O_(3))_(2)]^(3-) .

Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning The complex [Fe(H_(2)O)_(5)NO]^(2+) is formed in the brown ring test for nitrates when freshly prepared FeSO_(4) soultion is added to aqueous solution of NO_(3)^(Θ) followed by addition of conc. H_(2)SO_(4) Select correct statement about this complex (a) Colour change is due to charge transfer (b) It has iron in +1 oxidation state and nitrosyl as NO^(o+) (c ) It has magnetic moment of 3.87BM confirming three unpaired electrons in Fe (a) All the above are correct statements .

Coordination compounds plays many important roles in animals and plants. The are essential in the storage and transport of oxygen as electrons transfer agents as catalysts and in photosynthesis Wide range of application in daily life takes place through formation of complexes Photographic fixing qualitative and quantitative analysis purification of water metallurgical extraction are some specific worth mentioning Cu^(2+) and Cd^(2+) both are precipitated as sulphides on passing H_(2)S gas in dil HCI medium However, precipitation of Cu^(2+) is prevented by (a) Adding excess of K_(4)[Fe(CN)_(6)] when Cd^(2+) is only precipitated (b) Adding excess of KNC when Cu^(2+) for stable complex [Cu(CN)_(4)]^(3-) and Cd^(2+) forms unstable complex [Cd(CN)_(4)]^(2-) (c ) All of the above

Arrange the following compounds in order of decreasing acidity :

Which of the following complex is with lowest number of unpaired electron

GRB PUBLICATION-COORDINATION COMPOUNDS-D.VBT, CFT, Hybridisation
  1. Which is true for the complex [Ni(en)2]^(2+) ?

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  2. The crystal field -splitting for Cr^(3+) ion in octahedral field chang...

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  3. Coordination compounds plays many important roles in animals and plant...

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  4. Which of the following statement is false ?

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  5. The [Fe(CN)(6)]^(3-) complex ion :

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  6. Consider the following statements : (P) [Mn(H(2)O)(4)]SO(4) is param...

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  7. Which of the following statement about Fe(CO)(5) is correct ?

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  8. Which of the following statements is not true ?

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  9. For the correct assignment of electronic configuration of a complex, t...

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  10. A complex of certain metal has the magnetic moment of 4.91 BM whereas ...

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  11. Which of the following is correct for the complex [NiBr(2)(PPH(3))(2)]...

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  12. Which of the following statement is not correct ? (a) [Ni(H(2)O)(6)...

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  13. Both [Ni(CO)(4)] and [Ni(CN)(4)]^(2-) are diamagnetic. The hybridisati...

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  14. Nickel (Z=28) combines with a uninegative monodentate ligand X^(-) to ...

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  15. The complex [Fe(H(2)O)(5)NO]^(2+) is formed in the 'brown ring test' f...

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  16. [Fe(en)(2)(H(2)O)(2)]^(2+) +en to " complex(X)". The correct statement...

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  17. Which of the following complexes are low spin diamagnetic ? (P) K(4)...

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  18. Which of the following statements is incorrect ?

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  19. For Co(II), (Choose incorrect statement):

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  20. Which of the following are square planar complexes ? (P) [AuCl(4)]^(...

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