Question
Explain the important aspects of resonance with reference to $C O _3^{2-}$ ion.
✓
Answer
The Lewis structure consisting of two single bonds and one double bond between carbon and oxygen atoms is not sufficient to show the actual structure of carbonate ion because according to it the length of three carbon-oxygen bonds should be different. But according to experimental results, the length of all three carbon oxygen bonds of carbonate ion is equal. Therefore, the actual structure of carbonate ion can be represented as the resonance hybrid of following three canonical structures (I, II and III).
Three cannonical structures of $CO _3^{2-}$ ion : I, II and III.
Three cannonical structures of $CO _3^{2-}$ ion : I, II and III.
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
Match standard free energy of the reaction with the corresponding equilibrium constant.
→| Column I | Column II | ||
| i. | $\Delta\text{G}^\ominus>0$ | a. | $\text{K}>1$ |
| ii. | $\Delta\text{G}^\ominus<0$ | b. | $\text{K}=1$ |
| iii. | $\Delta\text{G}^\ominus=0$ | c. | $\text{K}=0$ |
|
|
| d. | $\text{K}<1$ |
For the reaction, $2 A( g )+ B ( g ) \longrightarrow 2 D ( g ) ; \Delta U^o=-10.5 kJ$ and $\Delta S^o=-44.1 JK ^{-1}$. Calculate $\Delta G^o$ for the reaction and predict whether the reaction may occur spontaneously. $\left( R =8.314 \times 10^{-3} kJ K ^{-1} mol^{-1}, T=298 K\right)$
→Why does fluorine not show disporportionation reaction?
Balance the following equations by the oxidation number method.
$\text{Fe}^{2+}+\text{H}^++\text{Cr}_2\text{O}^{2-}_7\xrightarrow{ \ \ \ \ \ \ \ \ \ }\text{Cr}^{3+}+\text{Fe}^{3+}+\text{H}_2 \text{O}$
→$\text{Fe}^{2+}+\text{H}^++\text{Cr}_2\text{O}^{2-}_7\xrightarrow{ \ \ \ \ \ \ \ \ \ }\text{Cr}^{3+}+\text{Fe}^{3+}+\text{H}_2 \text{O}$
What is meant by the term bond order? Calculate the bond order of $\text{N}_2,\text{O}_2,\text{O}^+_2$ and $\text{O}^-_2.$
→The two $\text{O}-\text{O}$ bond distances in ozone molecule are equal. Justify.
→- Arrange Fe, Fe2+, Fe3+ in increasing order of radii.
- Explain why Be has higher ionization enthalpy than B.
- Predict the formula of compound which might be formed by silicon and bromine.
Write down the outermost electronic configuration of alkali metals. How will you justify their placement in group 1 of the periodic table?
Among the elements $B , AI , C$ and Si
1. Which has the highest first ionization enthalpy?
2. Which has the most negative electron gain enthalpy?
3. Which has the largest atomic radius?
4. Which has the most metallic character?
→1. Which has the highest first ionization enthalpy?
2. Which has the most negative electron gain enthalpy?
3. Which has the largest atomic radius?
4. Which has the most metallic character?
Which of the following Lewis structure of CO2 molecule is least significant resonating form?
