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Grade 12th pass10 grade science

Which of the following statements is incorrect?
A
K4​[Ni(CN)4​] and K2​[Ni(CN)4​] both have same magnetic moment
B
K4​[Ni(CN)4​] is a diamagnetic while K4​[Ni(Cl)4​] is paramagnetic
C
K4​[Ni(CN)4​] is diamagnetic while K2​[Ni(CN)4​] is tetrahedral
D
K4​[Ni(Cl)4​] and K4​[Ni(CN)4​] both have same geometrical shapes

Profile image of Mayank Ranka
5 Years agoGrade 12th pass
Answers icon

1 Answer

Profile image of Omveer Singh
5 Years ago
 

K4​[Ni(CN)4​]→Ni(0),4s23d8, strong field ligand, 0 unpaired electrons, dsp2 & square planer, diamagnetic

 
K2​[Ni(CN)4​]→Ni(II), 4s03d8, strong field ligand, 0 unpaired electrons, dsp2 & square planer, diamagnetic
 
K4​[Ni(Cl)4​]→Ni(0), 4s23d8, weak field ligand, 2 unpaired electrons, sp3 & tetrahedral, paramagnetic.

The statement given in option C is incorrect.

Ans- Option C
 
 

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