If we replace all the fluoride ligands from ${[C o F_{6}]}^{3 -}$ by oxalate ligand without changing the oxidation state and co-ordination number of central metal atom or ion, then, peredict which of the following increases in the newly formed complex.
a) $Δ_{0}$ b) Number of $t_{2 g}$ electrons c) Number of $e_{g}$ electrons
d) Number of optical isomers e) Number of geometrical isomers,
f) EAN value g) Stability of complex

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answer is 4.

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Detailed Solution

${[C o F_{6}]}^{3 -} \overset{}{\to} {[Co {(C_{2} O_{4})}_{3}]}^{3-}$

W.F.L S.F.L

$t_{2 g^{4}} e g^{2}$ $t_{2 g^{6}} e g^{0}$

$Δ_{0}, t_{2 g},$ optical isomers & Stability of complex increases.

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