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  3. Chemistry
  4. (A) K4[Fe(CN)6] (B) K3[Cr(CN)6] (C) K3[Co(CN)6] (D) K2[Ni(CN)4] Select the complexes which are diamagnetic :

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Q. (A) $ {{K}_{4}}[Fe{{(CN)}_{6}}] $ (B) $ {{K}_{3}}[Cr{{(CN)}_{6}}] $
(C) $ {{K}_{3}}[Co{{(CN)}_{6}}] $ (D) $ {{K}_{2}}[Ni{{(CN)}_{4}}] $
Select the complexes which are diamagnetic :

KEAMKEAM 2005

Solution:

Structure $ {{K}_{4}}[Fe{{(CN)}_{6}}],{{K}_{3}}[Co{{(CN)}_{6}}], $ $ {{K}_{2}}[Ni{{(CN)}_{4}}] $ are diamagnetic.