Which of the following statements is incorrect?

Question

Which of the following statements is incorrect? (A) [ MnCl 6]3- is more paramagnetic than [ Mn ( CN )6]3- (B) Both [ Co ( C 2 O 4)3]3- and [ CoF 6]3- are paramagnetie. (C) [ Fe ( CN )6]3- forms inner orbital complex whereas [ FeF 6]3- forms outer orbital complex. (D) Both (a) and (b).

Tardigrade Admin · Accepted Answer

[ Co ( C 2 O 4)3]3- is dimagnetic as oxalate is a strong ligand causing pairing of 3 d electrons in Co 3+ thereby leading to d2 s p3 hybridisation.

Q. Which of the following statements is incorrect?

$[M n C l_{6}]^{3 -}$ is more paramagnetic than $[M n (CN)_{6}]^{3 -}$

Both $[C o (C_{2} O_{4})_{3}]^{3 -}$ and $[C o F_{6}]^{3 -}$ are paramagnetie.

$[F e (CN)_{6}]^{3 -}$ forms inner orbital complex whereas $[F e F_{6}]^{3 -}$ forms outer orbital complex.

Both (a) and (b).

$[C o (C_{2} O_{4})_{3}]^{3 -}$ is dimagnetic as oxalate is a strong ligand causing pairing of $3 d$ electrons in $C o^{3 +}$ thereby leading to $d^{2} s p^{3}$ hybridisation.

Q. Which of the following statements is incorrect?

[MnCl6​]3− is more paramagnetic than [Mn(CN)6​]3−

Both [Co(C2​O4​)3​]3− and [CoF6​]3− are paramagnetie.

[Fe(CN)6​]3− forms inner orbital complex whereas [FeF6​]3− forms outer orbital complex.

Both (a) and (b).

[Co(C2​O4​)3​]3− is dimagnetic as oxalate is a strong ligand causing pairing of 3d electrons in Co3+ thereby leading to d2sp3 hybridisation.

$[M n C l_{6}]^{3 -}$ is more paramagnetic than $[M n (CN)_{6}]^{3 -}$

Both $[C o (C_{2} O_{4})_{3}]^{3 -}$ and $[C o F_{6}]^{3 -}$ are paramagnetie.

$[F e (CN)_{6}]^{3 -}$ forms inner orbital complex whereas $[F e F_{6}]^{3 -}$ forms outer orbital complex.

$[C o (C_{2} O_{4})_{3}]^{3 -}$ is dimagnetic as oxalate is a strong ligand causing pairing of $3 d$ electrons in $C o^{3 +}$ thereby leading to $d^{2} s p^{3}$ hybridisation.