Coordination Compounds Ques 72
72. The number of unpaired electrons in the complex $[Cr(NH_3)_6] Br_3$ is (Atomic number $Cr=24$ )
[1999]
(a) 4
(b) 1
(c) 2
(d) 3
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Answer:
Correct Answer: 72.(d)
Solution:
(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.
BETA
