(A) : According to spectrochemical series, the arrangement of ligands in increasing order of their field strength can be written as- $\mathrm{SCN}^{-}<\mathrm{F}^{-}<\mathrm{CN}^{-}<\mathrm{CO}$
Karnataka-CET-2016
COORDINATION COMPOUNDS
274221
The molecular formula of Wilkinson's catalyst used in the hydrogenation of alkenes is
(B) : Wilkinson's catalyst, $\left[\mathrm{Rh}(\mathrm{PPh})_{3} \mathrm{Cl}\right]$ is used for the hydrogenation of alkenes. Wilkinson's catalyst
MHT CET-2016
COORDINATION COMPOUNDS
274222
Which of the following has longest $\mathrm{C}-\mathrm{O}$ bond length? (Free $\mathrm{C}-\mathrm{O}$ bond length in $\mathrm{CO}$ is $\mathbf{1 . 1 2 8}$ Å.)
(A) : As metals having more electron density then tendency of backbonding increase where metal donates lone pair of electrons to empty antibonding orbital of $\mathrm{CO}$ ligand. Due to which $\mathrm{C}-\mathrm{O}$ bond strength decrease and $\mathrm{C}-\mathrm{O}$ bond length will increase. Hence, in $\left[\mathrm{Fe}(\mathrm{Co})_{4}\right]^{2-}$ complex iron is present in -2 oxidation state therefore more electron density on it So, $\mathrm{C}-\mathrm{O}$ bond length in $\left[\mathrm{Fe}(\mathrm{Co})_{4}\right]^{2-}$ complex is longest among the following.
(A) : According to spectrochemical series, the arrangement of ligands in increasing order of their field strength can be written as- $\mathrm{SCN}^{-}<\mathrm{F}^{-}<\mathrm{CN}^{-}<\mathrm{CO}$
Karnataka-CET-2016
COORDINATION COMPOUNDS
274221
The molecular formula of Wilkinson's catalyst used in the hydrogenation of alkenes is
(B) : Wilkinson's catalyst, $\left[\mathrm{Rh}(\mathrm{PPh})_{3} \mathrm{Cl}\right]$ is used for the hydrogenation of alkenes. Wilkinson's catalyst
MHT CET-2016
COORDINATION COMPOUNDS
274222
Which of the following has longest $\mathrm{C}-\mathrm{O}$ bond length? (Free $\mathrm{C}-\mathrm{O}$ bond length in $\mathrm{CO}$ is $\mathbf{1 . 1 2 8}$ Å.)
(A) : As metals having more electron density then tendency of backbonding increase where metal donates lone pair of electrons to empty antibonding orbital of $\mathrm{CO}$ ligand. Due to which $\mathrm{C}-\mathrm{O}$ bond strength decrease and $\mathrm{C}-\mathrm{O}$ bond length will increase. Hence, in $\left[\mathrm{Fe}(\mathrm{Co})_{4}\right]^{2-}$ complex iron is present in -2 oxidation state therefore more electron density on it So, $\mathrm{C}-\mathrm{O}$ bond length in $\left[\mathrm{Fe}(\mathrm{Co})_{4}\right]^{2-}$ complex is longest among the following.
(A) : According to spectrochemical series, the arrangement of ligands in increasing order of their field strength can be written as- $\mathrm{SCN}^{-}<\mathrm{F}^{-}<\mathrm{CN}^{-}<\mathrm{CO}$
Karnataka-CET-2016
COORDINATION COMPOUNDS
274221
The molecular formula of Wilkinson's catalyst used in the hydrogenation of alkenes is
(B) : Wilkinson's catalyst, $\left[\mathrm{Rh}(\mathrm{PPh})_{3} \mathrm{Cl}\right]$ is used for the hydrogenation of alkenes. Wilkinson's catalyst
MHT CET-2016
COORDINATION COMPOUNDS
274222
Which of the following has longest $\mathrm{C}-\mathrm{O}$ bond length? (Free $\mathrm{C}-\mathrm{O}$ bond length in $\mathrm{CO}$ is $\mathbf{1 . 1 2 8}$ Å.)
(A) : As metals having more electron density then tendency of backbonding increase where metal donates lone pair of electrons to empty antibonding orbital of $\mathrm{CO}$ ligand. Due to which $\mathrm{C}-\mathrm{O}$ bond strength decrease and $\mathrm{C}-\mathrm{O}$ bond length will increase. Hence, in $\left[\mathrm{Fe}(\mathrm{Co})_{4}\right]^{2-}$ complex iron is present in -2 oxidation state therefore more electron density on it So, $\mathrm{C}-\mathrm{O}$ bond length in $\left[\mathrm{Fe}(\mathrm{Co})_{4}\right]^{2-}$ complex is longest among the following.
(A) : According to spectrochemical series, the arrangement of ligands in increasing order of their field strength can be written as- $\mathrm{SCN}^{-}<\mathrm{F}^{-}<\mathrm{CN}^{-}<\mathrm{CO}$
Karnataka-CET-2016
COORDINATION COMPOUNDS
274221
The molecular formula of Wilkinson's catalyst used in the hydrogenation of alkenes is
(B) : Wilkinson's catalyst, $\left[\mathrm{Rh}(\mathrm{PPh})_{3} \mathrm{Cl}\right]$ is used for the hydrogenation of alkenes. Wilkinson's catalyst
MHT CET-2016
COORDINATION COMPOUNDS
274222
Which of the following has longest $\mathrm{C}-\mathrm{O}$ bond length? (Free $\mathrm{C}-\mathrm{O}$ bond length in $\mathrm{CO}$ is $\mathbf{1 . 1 2 8}$ Å.)
(A) : As metals having more electron density then tendency of backbonding increase where metal donates lone pair of electrons to empty antibonding orbital of $\mathrm{CO}$ ligand. Due to which $\mathrm{C}-\mathrm{O}$ bond strength decrease and $\mathrm{C}-\mathrm{O}$ bond length will increase. Hence, in $\left[\mathrm{Fe}(\mathrm{Co})_{4}\right]^{2-}$ complex iron is present in -2 oxidation state therefore more electron density on it So, $\mathrm{C}-\mathrm{O}$ bond length in $\left[\mathrm{Fe}(\mathrm{Co})_{4}\right]^{2-}$ complex is longest among the following.
