(A) : Mohr's salt $\left(\mathrm{FeSO}_{4}\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4} \cdot 6 \mathrm{H}_{2} \mathrm{O}\right)$ is double salt which lose his identity in water and break in the cation and anion.
COMEDK-2016
COORDINATION COMPOUNDS
274231
Which of the following carbonyls will have the strongest $\mathrm{C}-\mathrm{O}$ bond?
1 $\mathrm{Mn}(\mathrm{CO})_{6}^{+}$
2 $\mathrm{Cr}(\mathrm{CO})_{6}$
3 $\mathrm{V}(\mathrm{CO})_{6}^{-}$
4 $\mathrm{Fe}(\mathrm{CO})_{5}$
Explanation:
(A) : Due to positive oxidation state of Mn back donation in $\pi^{*}$ (ABMO) of $\mathrm{CO}$ is minimum. Therefore, $\mathrm{C}-\mathrm{O}$ bond is strongest in $\mathrm{Mn}(\mathrm{CO})_{6}^{+}$.
VITEEE- 2012
COORDINATION COMPOUNDS
274232
The anion of acetylacetone (acac) forms $\mathrm{Co}(\text { acac })_{3}$ chelate with $\mathrm{Co}^{3+}$. The rings of the chelate are
1 five membered
2 four membered
3 six membered
4 three membered
Explanation:
(C) : The stability of a metal chelate also depends upon the size of the ring. It has been observed that metal cheats with 5-membered ring are more stable. 6membered chelates having double bond or unsturation in the ring are more stable than corresponding 5membered chelates. Acetylacetonato (acac) complexes containing 6-membered ring and double bonds in the ring form stable complexes.
(A) : $\left[\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]$ cannot ionize in solution because three chloride ions satisfy primary and secondary valencies. It will not be precipitated by addition of $\mathrm{AgNO}_{3}$.
(A) : Mohr's salt $\left(\mathrm{FeSO}_{4}\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4} \cdot 6 \mathrm{H}_{2} \mathrm{O}\right)$ is double salt which lose his identity in water and break in the cation and anion.
COMEDK-2016
COORDINATION COMPOUNDS
274231
Which of the following carbonyls will have the strongest $\mathrm{C}-\mathrm{O}$ bond?
1 $\mathrm{Mn}(\mathrm{CO})_{6}^{+}$
2 $\mathrm{Cr}(\mathrm{CO})_{6}$
3 $\mathrm{V}(\mathrm{CO})_{6}^{-}$
4 $\mathrm{Fe}(\mathrm{CO})_{5}$
Explanation:
(A) : Due to positive oxidation state of Mn back donation in $\pi^{*}$ (ABMO) of $\mathrm{CO}$ is minimum. Therefore, $\mathrm{C}-\mathrm{O}$ bond is strongest in $\mathrm{Mn}(\mathrm{CO})_{6}^{+}$.
VITEEE- 2012
COORDINATION COMPOUNDS
274232
The anion of acetylacetone (acac) forms $\mathrm{Co}(\text { acac })_{3}$ chelate with $\mathrm{Co}^{3+}$. The rings of the chelate are
1 five membered
2 four membered
3 six membered
4 three membered
Explanation:
(C) : The stability of a metal chelate also depends upon the size of the ring. It has been observed that metal cheats with 5-membered ring are more stable. 6membered chelates having double bond or unsturation in the ring are more stable than corresponding 5membered chelates. Acetylacetonato (acac) complexes containing 6-membered ring and double bonds in the ring form stable complexes.
(A) : $\left[\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]$ cannot ionize in solution because three chloride ions satisfy primary and secondary valencies. It will not be precipitated by addition of $\mathrm{AgNO}_{3}$.
(A) : Mohr's salt $\left(\mathrm{FeSO}_{4}\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4} \cdot 6 \mathrm{H}_{2} \mathrm{O}\right)$ is double salt which lose his identity in water and break in the cation and anion.
COMEDK-2016
COORDINATION COMPOUNDS
274231
Which of the following carbonyls will have the strongest $\mathrm{C}-\mathrm{O}$ bond?
1 $\mathrm{Mn}(\mathrm{CO})_{6}^{+}$
2 $\mathrm{Cr}(\mathrm{CO})_{6}$
3 $\mathrm{V}(\mathrm{CO})_{6}^{-}$
4 $\mathrm{Fe}(\mathrm{CO})_{5}$
Explanation:
(A) : Due to positive oxidation state of Mn back donation in $\pi^{*}$ (ABMO) of $\mathrm{CO}$ is minimum. Therefore, $\mathrm{C}-\mathrm{O}$ bond is strongest in $\mathrm{Mn}(\mathrm{CO})_{6}^{+}$.
VITEEE- 2012
COORDINATION COMPOUNDS
274232
The anion of acetylacetone (acac) forms $\mathrm{Co}(\text { acac })_{3}$ chelate with $\mathrm{Co}^{3+}$. The rings of the chelate are
1 five membered
2 four membered
3 six membered
4 three membered
Explanation:
(C) : The stability of a metal chelate also depends upon the size of the ring. It has been observed that metal cheats with 5-membered ring are more stable. 6membered chelates having double bond or unsturation in the ring are more stable than corresponding 5membered chelates. Acetylacetonato (acac) complexes containing 6-membered ring and double bonds in the ring form stable complexes.
(A) : $\left[\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]$ cannot ionize in solution because three chloride ions satisfy primary and secondary valencies. It will not be precipitated by addition of $\mathrm{AgNO}_{3}$.
(A) : Mohr's salt $\left(\mathrm{FeSO}_{4}\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4} \cdot 6 \mathrm{H}_{2} \mathrm{O}\right)$ is double salt which lose his identity in water and break in the cation and anion.
COMEDK-2016
COORDINATION COMPOUNDS
274231
Which of the following carbonyls will have the strongest $\mathrm{C}-\mathrm{O}$ bond?
1 $\mathrm{Mn}(\mathrm{CO})_{6}^{+}$
2 $\mathrm{Cr}(\mathrm{CO})_{6}$
3 $\mathrm{V}(\mathrm{CO})_{6}^{-}$
4 $\mathrm{Fe}(\mathrm{CO})_{5}$
Explanation:
(A) : Due to positive oxidation state of Mn back donation in $\pi^{*}$ (ABMO) of $\mathrm{CO}$ is minimum. Therefore, $\mathrm{C}-\mathrm{O}$ bond is strongest in $\mathrm{Mn}(\mathrm{CO})_{6}^{+}$.
VITEEE- 2012
COORDINATION COMPOUNDS
274232
The anion of acetylacetone (acac) forms $\mathrm{Co}(\text { acac })_{3}$ chelate with $\mathrm{Co}^{3+}$. The rings of the chelate are
1 five membered
2 four membered
3 six membered
4 three membered
Explanation:
(C) : The stability of a metal chelate also depends upon the size of the ring. It has been observed that metal cheats with 5-membered ring are more stable. 6membered chelates having double bond or unsturation in the ring are more stable than corresponding 5membered chelates. Acetylacetonato (acac) complexes containing 6-membered ring and double bonds in the ring form stable complexes.
(A) : $\left[\mathrm{CoCl}_{3}\left(\mathrm{NH}_{3}\right)_{3}\right]$ cannot ionize in solution because three chloride ions satisfy primary and secondary valencies. It will not be precipitated by addition of $\mathrm{AgNO}_{3}$.
