Coordination Compounds Ques 41

41. Which is diamagnetic?

[NEET Kar. 2013]

(a) $[Fe(CN)_6]^{3-}$

(b) $[Co(F_6)]^{3-}$

(c) $[Ni(CN)_4]^{2-}$

(d) $[NiCl_4]^{2-}$

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Answer:

Correct Answer: 41.(c)

Solution:

(c) $Ni^{+2} \to 3 d^{8}=

$CN^{-}$is a strong ligand and causes pairing of $3 d$ electrons of $Ni^{2+}$.

$\therefore$ It is diamagnetic.



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