Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Concept explainers

Electronic Effects
The effect of electrons that are located in the chemical bonds within the atoms of the molecule is termed an electronic effect. The electronic effect is also explained as the effect through which the reactivity of the compound in one portion is controlle…
Drawing Resonance Forms
In organic chemistry, resonance may be a mental exercise that illustrates the delocalization of electrons inside molecules within the valence bond theory of octet bonding. It entails creating several Lewis structures that, when combined, reflect the mole…
Using Molecular Structure To Predict Equilibrium
Equilibrium does not always imply an equal presence of reactants and products. This signifies that the reaction reaches a point when reactant and product quantities remain constant as the rate of forward and backward reaction is the same. Molecular struc…
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Are the following structures valid resonance contributors? Example 1 H :0-H H '0-H H3C CH3 H3C CH3 Valid resonance contributors Example 2 HC 0-CH3 0-CH3 H Valid resonance contributors
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Transcribed Image Text:Are the following structures valid resonance contributors? Example 1 H :0-H H '0-H H3C CH3 H3C CH3 Valid resonance contributors Example 2 HC 0-CH3 0-CH3 H Valid resonance contributors
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Resonance structure:
If the Lewis structure of a molecule or ion cannot explain by a single structure then more than one Lewis structures are written, these Lewis structures are different by the position of the lone pair of electrons and the pi bond. These structures are called resonance structures. The position of the atoms does not change in all the resonance structures. The movement of pi electrons in resonance structures is shown by the curved arrow. 

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