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Coordination Compounds question

2013 · Q100
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Coordination Compounds question

2013 · Q100

NEETChemistryCoordination CompoundsMCQ+4 / −1
Which among the following is a paramagnetic complex?
  1. A
    [Co(NH3)6]3+
  2. B
    [Pt(en)Cl2]
  3. C
    [CoBr4]2−2-2−
  4. D
    Mo(CO)6
View written solutionFree

Correct answer: C

Co2+ : [Ar]3d74s0, here, Br– is a weak field ligand so will not cause pairing of d-electrons in Co2+.

∴\therefore∴ [CoBr4]2– will exhibit paramagnetic behaviour due to unpaired electrons.

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