MCQ
The most stable ion is
- A$[Fe(C_2O_4)_3]^{3-}$
- ✓$[Fe(CN)_6]^{3-}$
- C$[Fe(CN)_6]^{4-}$
- D$[Fe(H_2O)_6]^{3+}$
✓
Answer
Correct option: B.
$[Fe(CN)_6]^{3-}$
b
Among the given complexes the most stable is $\left[ Fe ( CN )_6\right]^{3-}$ because only this complex is forming a inner orbital complex because of the presence of a strong field ligand and its hybridization is $d^2 s p^3$ while rest of the complexes forms a outer orbital complex which are less stable in comparison.
Among the given complexes the most stable is $\left[ Fe ( CN )_6\right]^{3-}$ because only this complex is forming a inner orbital complex because of the presence of a strong field ligand and its hybridization is $d^2 s p^3$ while rest of the complexes forms a outer orbital complex which are less stable in comparison.
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
In esterification, the reactivity of alcohols is
The oxygen dissolved in water exerts a partial pressure of $20\, kPa$ in the vapour above water. The molar solubility of oxygen in water is ............ $-\times 10^{-5}\, mol\, dm ^{-3}$
→(Round off to the Nearest Integer).
[Given : Henry's law constant $= K _{ H }=8.0 \times 10^{4} kPa$ for $O _{2}$ Density of water with dissolved oxygen $=1.0\, kg\, dm ^{-3}$ ]
In the chemical reaction given above $A$ and $B$ respectively are :
→$C{H_3} - CH = C{H_2}\xrightarrow[{hv\,(low\,conc.)}]{{B{r_2}}}\xrightarrow[{Dry\,ether}]{{Mg}}\xrightarrow[{N{H_4}Cl}]{{\begin{array}{*{20}{c}}
O \\
{||} \\
{C{H_3} - C - C{H_3}}
\end{array}}}\xrightarrow[\Delta ]{{{H^ + }}}\mathop {(X)}\limits_{(major)} $
→O \\
{||} \\
{C{H_3} - C - C{H_3}}
\end{array}}}\xrightarrow[\Delta ]{{{H^ + }}}\mathop {(X)}\limits_{(major)} $
End product $(X)$ of the above reaction is
Metal halide which is insoluble in water is
Standard electrode potential of $A{g^ + }/Ag$ and $C{u^ + }/Cu$ is $ + 0.80\,V$ and $ + 0.34\,V$ respectively. these electrodes are joint together by salt bridge if
→Order of number of chelate ring is correct for
→$(i)\, [Co(en)_2(Ox)]^+$
$(ii)\, [Fe(Trien)(Ox)]^+$
$(iii)\, [Ca(EDTA)]^{-2}$
$(iv)\, [Pt(Ox)_2 (H_2O)_2]$
In the following sequence of reactions a compound
→$A$, (molecular formula $\left.\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{2}\right)$ with a straight chain structure gives a $C_{4}$ carboxylic acid. $A$ is :
$A \frac{{Li} {A} {H} {H}_{4}}{{H}_{3} {O}^{+}} \longrightarrow B \stackrel{\text { Oxidation }}{\longrightarrow} {C}_{4}-$ carboxylic acid
Match List$-I$ with List$-II$ :
→Choose the correct answer from the options given below:
$HN{O_3}$ in aqueous solution yields
→