Coordination Compounds Ques 67
67. The number of unpaired electrons in the complex ion $[CoF_6]^{3-}$ is (Atomic no.: $Co=27$ )
[2003]
(a) Zero
(b) 2
(c) 3
(d) 4
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Answer:
Correct Answer: 67.(d)
Solution:
(d) Co here is in +3 oxidation state

Unpaired electrons $=4$ and $s p^{3} d^{2}$ hybridisation and octahedral shape.