Coordination Compounds - Result Question 69

####76. The number of unpaired electrons in the complex $[Cr(NH_3)_6] Br_3$ is (Atomic number $Cr=24$ )

(a) 4

(b) 1

(c) 2

(d) 3

[1999]

Show Answer

Solution:

  1. (d) $In[Cr(NH_3)_6] Br_3, Cr$ is in +3 oxidation state etc.

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



NCERT Chapter Video Solution

Dual Pane