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QNEET-2013-Ch-1552: NEET 2013 Chemistry - Class 12 NEET-2013-Ch-1552 Solution: Which among the following is a paramagnetic complex?…

Which among the following is a paramagnetic complex? [Co(NH3)6]3+[Co(NH_3)_6]^{3+} [Pt(en)Cl2][Pt(en)Cl_2] [CoBr4]2−[CoBr_4]^{2-} Mo(CO)6Mo(CO)_6

Multiple Choice Options

  • A [Co(NH 3 ) 6 ] 3+
  • B [Pt(en)Cl 2 ]
  • C [CoBr 4 ] 2−2- 2 _
  • D Mo(CO) 6

Step-by-Step Verified Solution

Co 2+ : [Ar]3d 7 4s 0 , here, Br � is a weak field ligand so will not cause pairing of d-electrons in Co 2+ . _ [CoBr 4 ] 2� will exhibit paramagnetic behaviour due to unpaired electrons.

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