Coordination Compounds - Result Question 69

####76. The number of unpaired electrons in the complex [Cr(NH3)6]Br3 is (Atomic number Cr=24 )

(a) 4

(b) 1

(c) 2

(d) 3

[1999]

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Solution:

  1. (d) In[Cr(NH3)6]Br3,Cr is in +3 oxidation state etc.

Its ion is octahedral in nature. Due to the presence of three unpaired electrons it is paramagnetic.



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