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The number of unpaired electrons in the complex ion `[CoF_6]^(3-)` is (Atomic no. of `Co=27`)

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The number of unpaired electrons in the complex ion `[CoF_6]^(3-)` is (Atomic no. of `Co=27`)
A. Zero
B. 2
C. 3
D. 4
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Correct Answer - D
The number of unpaired electrons in the Complex ion `[CoF_(6)]^(3-)` is 4.
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