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Which is high spin complex :

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a

$Co {({NH}_{3})}_{6}^{3 +}$

b

${FeF}_{6}^{3 -}$

c

${CoCl}_{6}^{3 -}$

d

${[Ni (CN)_{4}]}^{2 -}$

answer is A, B.

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Detailed Solution

${[{CoCl}_{6}]}^{3 -} and {[{FeF}_{b}]}^{3 -}$ have 4 and 5 unpaired e^–1s

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