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Coordination Compounds — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
MCQ
Which of the following complex has five unpaired electrons?
  • A
    [Mn(H2​O)6​]2+
  • B
    [Mn(CN)6​]3−
  • C
    [CrCl3​(H2​O3​]
  • D
    [Ag(NH3​)2​]+
✓

Answer

  1. [Mn(H2​O)6​]2+

Explanation:

Mn2+ has d5 configuration, since H2​O is weak ligand field, so it does not causes pairing of electrons and hence it has 5 unpaired electrons.

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