Q.

Give the correct of initials T or F for following statements. Use T if statement is true and F if it is false.
(I) Co(IIl) is stabilised in presence of weak field ligands, while Co(II) is stabilised in presence of strong field ligand.
(II) Four coordinated complexes of Pd(II) and Pt(II) are diamagnetic and square planar.
(III) Ni(CN)44 ion and Ni(CO)4 are diamagnetic tetrahedral and square planar respectively.
(Iy) Ni2+ ion does not form inner orbital octahedral complexes.

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a

TTFT

b

TTTF

c

TFTF

d

FTFT

answer is D.

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Detailed Solution

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 (I) Both CO2+ and Co3+ are stabilized in the presence of strong field ligands due to higher CFSE values. 
 (II) Because of higher Zeff  value on the valence shell of Pd2+ and Pt2+ cations they, always from inner orbital complex.
 (III) Ni(CO)4;sp3, tetrahedral, μ=0BM           Ni(CN)44; sp3, tetrahedral, μ=0BM      
 (IV) Ni2+ in the octahedral field. 

 

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 i.e., electronic distribution remains unaffected. 

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