MCQ
Select most stable complex
- A$[Co(NH_3)_6]^{3+}$
- B$[Co(NH_3)_2(en)_2]^{3+}$
- C$[Co(NH_3)_4]^{3+}$
- ✓$[Co(en)_3]^{3+}$
✓
Answer
Correct option: D.
$[Co(en)_3]^{3+}$
d
$\left[ Co ( en )_3\right]^{3+}$ is more stable than $\left[ Co \left( NH _3\right)_6\right]^{3+}$ as $\left[ Co ( en )_3\right]^{3+}$ is a metal chelate due to presece of bidentate ligand ethylene diamine ligand. Metal chelates are more stable than complexes containing only monodentate lignads.
$\left[ Co ( en )_3\right]^{3+}$ is more stable than $\left[ Co \left( NH _3\right)_6\right]^{3+}$ as $\left[ Co ( en )_3\right]^{3+}$ is a metal chelate due to presece of bidentate ligand ethylene diamine ligand. Metal chelates are more stable than complexes containing only monodentate lignads.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$1, 2\,-\,$ Dibromopropane on treatement with $X$ moles of $NaNH_2$ followed by reaction with ethyl bromide give a $2 - $ pentyne the value of $X$ is
→Which is the major product of the following reaction ?
The products formed in the reaction of cumene with $O_2$ followed by treatment with dil. $HCl$ are
→Correct increasing order for the wave lengths of absorption in the visible region for the complexes of $Co^{3+}$ is
→The theory that can completely/properly explain the nature of bonding in $[Ni(CO)_4]$ is
→The number of ions present in $2.0\ L$ of a solution of $0.8\ M\ K_4[Fe(CN)_6]$ is
→If the difference in electronegativities of two elements is very large, then
In which of the following equilibria, $\mathrm{K}_p$ and $\mathrm{K}_{\mathrm{c}}$ are $NOT$ equal?
→Meso-tartaric acid is
Which of the following compounds will react with $NaHC{O_3}$ solution to give sodium salt and carbon dioxide
→