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Introduction to Optical Isomerism

Write the hyb...

Question

Write the hybridisation and number of unpaired electrons in the complex $[C o F_{6}]^{3 -}$ . (Atomic No. of Co $= 27$ ).

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Solution

$[C o F_{6}]^{3 -}$ is an octahedral complex in which central Co atom is $s p^{3} d^{2}$ hybridised. Outer 4d orbital is utilized in hybridisation. Hence, it is outer orbital or high spin or spin free complex. Due to the presence of four unpaired electrons, $[C o F_{6}]^{3 -}$ is paramagnetic.

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