274240
In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, the two iron atoms are
1 linked only dirctly.
2 linked directly along with $3 \mathrm{CO}$ molecules as bridging ligands.
3 linked only through $3 \mathrm{CO}$ molecules as bridging ligands.
4 Joined through one $\mathrm{CO}$ group as bridging ligands.
Explanation:
(B) : In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, linked directly along with the 3 $\mathrm{CO}$ molecules as bridging ligands. Structure of $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$
AIIMS-2011
COORDINATION COMPOUNDS
274241
What is incorrect about homoleptic metal carbonyls?
1 $\mathrm{M}-\mathrm{C}$, bond is formed by donation of lone pair of electron from CO.
2 $\mathrm{M}-\mathrm{C}, \pi$-bond is formed by back donation of electron from filled $d$-orbital of metal to vacant $p$-orbital of carbon.
3 M - CO bonding produce synergic effect.
4 Metal carbonyl contain only $\sigma$-bonds.
Explanation:
(C) : In homoleptic metal carbonyls , M - CO bonding produce synergic effect due to formation of $\sigma$ and $\pi$ - backbonding, $\sigma$ bond is formed by donation of lone pair of electrons from carbon of $\mathrm{CO}$ group to vacant orbital of metal and $\pi-$ bond is formed by backdonation of lone pair of electron from filled orbital of metal to vacant $\mathrm{p}$-orbital of carbon.
AIIMS-2010
COORDINATION COMPOUNDS
274242
Which statement is true for ferrocene?
1 all $\mathrm{Fe}-\mathrm{C}$ are of equal length.
2 It has sandwich type structure.
3 It was the first discovered organometallic compound.
4 All of these.
Explanation:
(D) : In Ferrocene all $\mathrm{Fe}-\mathrm{C}$ bond lengths are equal and here one Fe atom sandwich between two cyclopentadienyl ring. Ferrocene was the first discovered organometallic compounds. Its molecular formula is $\mathrm{Fe}\left(\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}$.
AIIMS-2007
COORDINATION COMPOUNDS
274243
The ligands in anti - cancer drue cis - platin are:
1 $\mathrm{NH}_{3}, \mathrm{Cl}$
2 $\mathrm{NH}_{3}, \mathrm{H}_{2} \mathrm{O}$
3 $\mathrm{Cl}, \mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{NO}, \mathrm{Cl}$
Explanation:
(A) : Cis-platin is used as anti-cancer drug for treatment of cancer. Cis $-\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$ The ligand $\mathrm{NH}_{3}$ and $\mathrm{Cl}^{-}$is present in cis-platin.
AIIMS-2006]
COORDINATION COMPOUNDS
274244
The only cations present in a slightly acidic solutions are $\mathrm{Fe}^{3+}, \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+}$. The reagent that when added in excess to this solution would identify and separate $\mathrm{Fe}^{3+}$ in one step is
1 $2 \mathrm{M} \mathrm{HCl}$
2 $6 \mathrm{M} \mathrm{NH}_{3}$
3 $6 \mathrm{M} \mathrm{NaOH}$
4 $\mathrm{H}_{2} \mathrm{~S}$ gas
Explanation:
(B) : For separation and identification of $\mathrm{Fe}^{3+}$ from solution of $\mathrm{Fe}^{3+}, \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ that reagent is used in which $\mathrm{Fe}^{3+}$ is not soluble and forms precipitate with it while other two $\mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ are soluble in that reagent. The only reagent from the given is $6 \mathrm{M} \mathrm{N \textrm {NH } _ { 3 }}$ which form precipitate with $\mathrm{Fe}^{3+}$ ion. $\mathrm{Fe}^{3+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow \mathrm{Fe}(\mathrm{OH})_{3} \downarrow+\mathrm{NH}_{4}^{+}$ $\mathrm{Cu}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$ $\mathrm{Zn}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
274240
In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, the two iron atoms are
1 linked only dirctly.
2 linked directly along with $3 \mathrm{CO}$ molecules as bridging ligands.
3 linked only through $3 \mathrm{CO}$ molecules as bridging ligands.
4 Joined through one $\mathrm{CO}$ group as bridging ligands.
Explanation:
(B) : In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, linked directly along with the 3 $\mathrm{CO}$ molecules as bridging ligands. Structure of $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$
AIIMS-2011
COORDINATION COMPOUNDS
274241
What is incorrect about homoleptic metal carbonyls?
1 $\mathrm{M}-\mathrm{C}$, bond is formed by donation of lone pair of electron from CO.
2 $\mathrm{M}-\mathrm{C}, \pi$-bond is formed by back donation of electron from filled $d$-orbital of metal to vacant $p$-orbital of carbon.
3 M - CO bonding produce synergic effect.
4 Metal carbonyl contain only $\sigma$-bonds.
Explanation:
(C) : In homoleptic metal carbonyls , M - CO bonding produce synergic effect due to formation of $\sigma$ and $\pi$ - backbonding, $\sigma$ bond is formed by donation of lone pair of electrons from carbon of $\mathrm{CO}$ group to vacant orbital of metal and $\pi-$ bond is formed by backdonation of lone pair of electron from filled orbital of metal to vacant $\mathrm{p}$-orbital of carbon.
AIIMS-2010
COORDINATION COMPOUNDS
274242
Which statement is true for ferrocene?
1 all $\mathrm{Fe}-\mathrm{C}$ are of equal length.
2 It has sandwich type structure.
3 It was the first discovered organometallic compound.
4 All of these.
Explanation:
(D) : In Ferrocene all $\mathrm{Fe}-\mathrm{C}$ bond lengths are equal and here one Fe atom sandwich between two cyclopentadienyl ring. Ferrocene was the first discovered organometallic compounds. Its molecular formula is $\mathrm{Fe}\left(\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}$.
AIIMS-2007
COORDINATION COMPOUNDS
274243
The ligands in anti - cancer drue cis - platin are:
1 $\mathrm{NH}_{3}, \mathrm{Cl}$
2 $\mathrm{NH}_{3}, \mathrm{H}_{2} \mathrm{O}$
3 $\mathrm{Cl}, \mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{NO}, \mathrm{Cl}$
Explanation:
(A) : Cis-platin is used as anti-cancer drug for treatment of cancer. Cis $-\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$ The ligand $\mathrm{NH}_{3}$ and $\mathrm{Cl}^{-}$is present in cis-platin.
AIIMS-2006]
COORDINATION COMPOUNDS
274244
The only cations present in a slightly acidic solutions are $\mathrm{Fe}^{3+}, \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+}$. The reagent that when added in excess to this solution would identify and separate $\mathrm{Fe}^{3+}$ in one step is
1 $2 \mathrm{M} \mathrm{HCl}$
2 $6 \mathrm{M} \mathrm{NH}_{3}$
3 $6 \mathrm{M} \mathrm{NaOH}$
4 $\mathrm{H}_{2} \mathrm{~S}$ gas
Explanation:
(B) : For separation and identification of $\mathrm{Fe}^{3+}$ from solution of $\mathrm{Fe}^{3+}, \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ that reagent is used in which $\mathrm{Fe}^{3+}$ is not soluble and forms precipitate with it while other two $\mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ are soluble in that reagent. The only reagent from the given is $6 \mathrm{M} \mathrm{N \textrm {NH } _ { 3 }}$ which form precipitate with $\mathrm{Fe}^{3+}$ ion. $\mathrm{Fe}^{3+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow \mathrm{Fe}(\mathrm{OH})_{3} \downarrow+\mathrm{NH}_{4}^{+}$ $\mathrm{Cu}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$ $\mathrm{Zn}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
274240
In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, the two iron atoms are
1 linked only dirctly.
2 linked directly along with $3 \mathrm{CO}$ molecules as bridging ligands.
3 linked only through $3 \mathrm{CO}$ molecules as bridging ligands.
4 Joined through one $\mathrm{CO}$ group as bridging ligands.
Explanation:
(B) : In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, linked directly along with the 3 $\mathrm{CO}$ molecules as bridging ligands. Structure of $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$
AIIMS-2011
COORDINATION COMPOUNDS
274241
What is incorrect about homoleptic metal carbonyls?
1 $\mathrm{M}-\mathrm{C}$, bond is formed by donation of lone pair of electron from CO.
2 $\mathrm{M}-\mathrm{C}, \pi$-bond is formed by back donation of electron from filled $d$-orbital of metal to vacant $p$-orbital of carbon.
3 M - CO bonding produce synergic effect.
4 Metal carbonyl contain only $\sigma$-bonds.
Explanation:
(C) : In homoleptic metal carbonyls , M - CO bonding produce synergic effect due to formation of $\sigma$ and $\pi$ - backbonding, $\sigma$ bond is formed by donation of lone pair of electrons from carbon of $\mathrm{CO}$ group to vacant orbital of metal and $\pi-$ bond is formed by backdonation of lone pair of electron from filled orbital of metal to vacant $\mathrm{p}$-orbital of carbon.
AIIMS-2010
COORDINATION COMPOUNDS
274242
Which statement is true for ferrocene?
1 all $\mathrm{Fe}-\mathrm{C}$ are of equal length.
2 It has sandwich type structure.
3 It was the first discovered organometallic compound.
4 All of these.
Explanation:
(D) : In Ferrocene all $\mathrm{Fe}-\mathrm{C}$ bond lengths are equal and here one Fe atom sandwich between two cyclopentadienyl ring. Ferrocene was the first discovered organometallic compounds. Its molecular formula is $\mathrm{Fe}\left(\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}$.
AIIMS-2007
COORDINATION COMPOUNDS
274243
The ligands in anti - cancer drue cis - platin are:
1 $\mathrm{NH}_{3}, \mathrm{Cl}$
2 $\mathrm{NH}_{3}, \mathrm{H}_{2} \mathrm{O}$
3 $\mathrm{Cl}, \mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{NO}, \mathrm{Cl}$
Explanation:
(A) : Cis-platin is used as anti-cancer drug for treatment of cancer. Cis $-\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$ The ligand $\mathrm{NH}_{3}$ and $\mathrm{Cl}^{-}$is present in cis-platin.
AIIMS-2006]
COORDINATION COMPOUNDS
274244
The only cations present in a slightly acidic solutions are $\mathrm{Fe}^{3+}, \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+}$. The reagent that when added in excess to this solution would identify and separate $\mathrm{Fe}^{3+}$ in one step is
1 $2 \mathrm{M} \mathrm{HCl}$
2 $6 \mathrm{M} \mathrm{NH}_{3}$
3 $6 \mathrm{M} \mathrm{NaOH}$
4 $\mathrm{H}_{2} \mathrm{~S}$ gas
Explanation:
(B) : For separation and identification of $\mathrm{Fe}^{3+}$ from solution of $\mathrm{Fe}^{3+}, \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ that reagent is used in which $\mathrm{Fe}^{3+}$ is not soluble and forms precipitate with it while other two $\mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ are soluble in that reagent. The only reagent from the given is $6 \mathrm{M} \mathrm{N \textrm {NH } _ { 3 }}$ which form precipitate with $\mathrm{Fe}^{3+}$ ion. $\mathrm{Fe}^{3+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow \mathrm{Fe}(\mathrm{OH})_{3} \downarrow+\mathrm{NH}_{4}^{+}$ $\mathrm{Cu}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$ $\mathrm{Zn}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
274240
In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, the two iron atoms are
1 linked only dirctly.
2 linked directly along with $3 \mathrm{CO}$ molecules as bridging ligands.
3 linked only through $3 \mathrm{CO}$ molecules as bridging ligands.
4 Joined through one $\mathrm{CO}$ group as bridging ligands.
Explanation:
(B) : In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, linked directly along with the 3 $\mathrm{CO}$ molecules as bridging ligands. Structure of $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$
AIIMS-2011
COORDINATION COMPOUNDS
274241
What is incorrect about homoleptic metal carbonyls?
1 $\mathrm{M}-\mathrm{C}$, bond is formed by donation of lone pair of electron from CO.
2 $\mathrm{M}-\mathrm{C}, \pi$-bond is formed by back donation of electron from filled $d$-orbital of metal to vacant $p$-orbital of carbon.
3 M - CO bonding produce synergic effect.
4 Metal carbonyl contain only $\sigma$-bonds.
Explanation:
(C) : In homoleptic metal carbonyls , M - CO bonding produce synergic effect due to formation of $\sigma$ and $\pi$ - backbonding, $\sigma$ bond is formed by donation of lone pair of electrons from carbon of $\mathrm{CO}$ group to vacant orbital of metal and $\pi-$ bond is formed by backdonation of lone pair of electron from filled orbital of metal to vacant $\mathrm{p}$-orbital of carbon.
AIIMS-2010
COORDINATION COMPOUNDS
274242
Which statement is true for ferrocene?
1 all $\mathrm{Fe}-\mathrm{C}$ are of equal length.
2 It has sandwich type structure.
3 It was the first discovered organometallic compound.
4 All of these.
Explanation:
(D) : In Ferrocene all $\mathrm{Fe}-\mathrm{C}$ bond lengths are equal and here one Fe atom sandwich between two cyclopentadienyl ring. Ferrocene was the first discovered organometallic compounds. Its molecular formula is $\mathrm{Fe}\left(\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}$.
AIIMS-2007
COORDINATION COMPOUNDS
274243
The ligands in anti - cancer drue cis - platin are:
1 $\mathrm{NH}_{3}, \mathrm{Cl}$
2 $\mathrm{NH}_{3}, \mathrm{H}_{2} \mathrm{O}$
3 $\mathrm{Cl}, \mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{NO}, \mathrm{Cl}$
Explanation:
(A) : Cis-platin is used as anti-cancer drug for treatment of cancer. Cis $-\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$ The ligand $\mathrm{NH}_{3}$ and $\mathrm{Cl}^{-}$is present in cis-platin.
AIIMS-2006]
COORDINATION COMPOUNDS
274244
The only cations present in a slightly acidic solutions are $\mathrm{Fe}^{3+}, \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+}$. The reagent that when added in excess to this solution would identify and separate $\mathrm{Fe}^{3+}$ in one step is
1 $2 \mathrm{M} \mathrm{HCl}$
2 $6 \mathrm{M} \mathrm{NH}_{3}$
3 $6 \mathrm{M} \mathrm{NaOH}$
4 $\mathrm{H}_{2} \mathrm{~S}$ gas
Explanation:
(B) : For separation and identification of $\mathrm{Fe}^{3+}$ from solution of $\mathrm{Fe}^{3+}, \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ that reagent is used in which $\mathrm{Fe}^{3+}$ is not soluble and forms precipitate with it while other two $\mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ are soluble in that reagent. The only reagent from the given is $6 \mathrm{M} \mathrm{N \textrm {NH } _ { 3 }}$ which form precipitate with $\mathrm{Fe}^{3+}$ ion. $\mathrm{Fe}^{3+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow \mathrm{Fe}(\mathrm{OH})_{3} \downarrow+\mathrm{NH}_{4}^{+}$ $\mathrm{Cu}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$ $\mathrm{Zn}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
274240
In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, the two iron atoms are
1 linked only dirctly.
2 linked directly along with $3 \mathrm{CO}$ molecules as bridging ligands.
3 linked only through $3 \mathrm{CO}$ molecules as bridging ligands.
4 Joined through one $\mathrm{CO}$ group as bridging ligands.
Explanation:
(B) : In $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$, linked directly along with the 3 $\mathrm{CO}$ molecules as bridging ligands. Structure of $\mathrm{Fe}_{2}(\mathrm{CO})_{9}$
AIIMS-2011
COORDINATION COMPOUNDS
274241
What is incorrect about homoleptic metal carbonyls?
1 $\mathrm{M}-\mathrm{C}$, bond is formed by donation of lone pair of electron from CO.
2 $\mathrm{M}-\mathrm{C}, \pi$-bond is formed by back donation of electron from filled $d$-orbital of metal to vacant $p$-orbital of carbon.
3 M - CO bonding produce synergic effect.
4 Metal carbonyl contain only $\sigma$-bonds.
Explanation:
(C) : In homoleptic metal carbonyls , M - CO bonding produce synergic effect due to formation of $\sigma$ and $\pi$ - backbonding, $\sigma$ bond is formed by donation of lone pair of electrons from carbon of $\mathrm{CO}$ group to vacant orbital of metal and $\pi-$ bond is formed by backdonation of lone pair of electron from filled orbital of metal to vacant $\mathrm{p}$-orbital of carbon.
AIIMS-2010
COORDINATION COMPOUNDS
274242
Which statement is true for ferrocene?
1 all $\mathrm{Fe}-\mathrm{C}$ are of equal length.
2 It has sandwich type structure.
3 It was the first discovered organometallic compound.
4 All of these.
Explanation:
(D) : In Ferrocene all $\mathrm{Fe}-\mathrm{C}$ bond lengths are equal and here one Fe atom sandwich between two cyclopentadienyl ring. Ferrocene was the first discovered organometallic compounds. Its molecular formula is $\mathrm{Fe}\left(\mathrm{C}_{5} \mathrm{H}_{5}\right)_{2}$.
AIIMS-2007
COORDINATION COMPOUNDS
274243
The ligands in anti - cancer drue cis - platin are:
1 $\mathrm{NH}_{3}, \mathrm{Cl}$
2 $\mathrm{NH}_{3}, \mathrm{H}_{2} \mathrm{O}$
3 $\mathrm{Cl}, \mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{NO}, \mathrm{Cl}$
Explanation:
(A) : Cis-platin is used as anti-cancer drug for treatment of cancer. Cis $-\left[\mathrm{PtCl}_{2}\left(\mathrm{NH}_{3}\right)_{2}\right]$ The ligand $\mathrm{NH}_{3}$ and $\mathrm{Cl}^{-}$is present in cis-platin.
AIIMS-2006]
COORDINATION COMPOUNDS
274244
The only cations present in a slightly acidic solutions are $\mathrm{Fe}^{3+}, \mathrm{Zn}^{2+}$ and $\mathrm{Cu}^{2+}$. The reagent that when added in excess to this solution would identify and separate $\mathrm{Fe}^{3+}$ in one step is
1 $2 \mathrm{M} \mathrm{HCl}$
2 $6 \mathrm{M} \mathrm{NH}_{3}$
3 $6 \mathrm{M} \mathrm{NaOH}$
4 $\mathrm{H}_{2} \mathrm{~S}$ gas
Explanation:
(B) : For separation and identification of $\mathrm{Fe}^{3+}$ from solution of $\mathrm{Fe}^{3+}, \mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ that reagent is used in which $\mathrm{Fe}^{3+}$ is not soluble and forms precipitate with it while other two $\mathrm{Cu}^{2+}$ and $\mathrm{Zn}^{2+}$ are soluble in that reagent. The only reagent from the given is $6 \mathrm{M} \mathrm{N \textrm {NH } _ { 3 }}$ which form precipitate with $\mathrm{Fe}^{3+}$ ion. $\mathrm{Fe}^{3+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow \mathrm{Fe}(\mathrm{OH})_{3} \downarrow+\mathrm{NH}_{4}^{+}$ $\mathrm{Cu}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Cu}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$ $\mathrm{Zn}^{2+}+\text { dil. } \mathrm{NH}_{3} \longrightarrow\left[\mathrm{Zn}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}$
