NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

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Iron has lowest oxidation state in:

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Correct option: A

\mathrm{Fe}{\left( {\mathrm{CO}} \right)_5}

The correct answer is A (

\mathrm{Fe}{\left( {\mathrm{CO}} \right)_5}

). In metal carbonyls, the oxidation state of the metal is considered to be zero because CO is a neutral ligand.

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\left[ {\mathrm{PtC}{\mathrm{l}_2}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_4}} \right]\mathrm{B}{\mathrm{r}_2}\mathrm{\;and\;}\left[ {\mathrm{PtB}{\mathrm{r}_2}{{\left( {\mathrm{N}{\mathrm{H}_3}} \right)}_4}} \right]\mathrm{C}{\mathrm{l}_2}\mathrm{\;}

\left[\mathrm{Cr}(\mathrm{Ox})_{2} \mathrm{ClBr}\right]^{3-}

\text{ox =}

x

{\left[ {\mathrm{Ni}{{\left( {\mathrm{CN}} \right)}_4}} \right]^x}

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