NEET UG CHEMISTRY MCQ: CO-ORDINATION COMPOUNDS

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Understanding +4 | -1

Synergic bonding in metal carbonyl complexes

[{M}=

metal

]

______

(i) decreases

{C}-{O}

bond strength

(ii) increases

{M}-{C}

bond length

(iii) increases bond order for

{M}-{C}

bond

View answer and explanation

Correct option: B

(i) and (iii)

The correct answer is B ((i) and (iii)). Synergic bonding in metal carbonyls involves back-donation from the metal to the CO ligand, which decreases the C-O bond strength and increases the M-C bond order.

More Questions from CO-ORDINATION COMPOUNDS

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The complexes

\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{\;}

are example for isomerism The total number of stereoisomers for the complex

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

(where

\text{ox =}

oxalate) is The value of

x

on the

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

is: Excited state configuration of

\mathrm{M}{\mathrm{n}^{2 + }}

\mathrm{CuS}{\mathrm{O}_4}

decolourises on addition of KCN, the product is: The IUPAC name of

{\mathrm{K}_2}\left[ {\mathrm{Ni}{{\left( {\mathrm{CN}} \right)}_4}} \right]