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And that's not actually what's happening; it's just that we can't draw, if we're just drawing one dot structure, this is not an accurate description, and so the electrons are actually de-localized, so it's not resonating back and forth. When you draw resonance structures in your head, think about what that means for the hybrid, and how the resonance structures would contribute to the overall hybrid. So don't forget about your brackets, and your double-headed arrows, and also your formal charges, so you have to put those in, when you're drawing your resonance structures.

All right, let's look at an application of the acetate anion here, and the resonance structures that we can draw. If we look at the acetate anion, so we just talked about the fact that one of these lone pairs here, so this is not localized to the oxygen; it's de-localized, so we can move those electrons in here, we push those electrons off, onto the oxygen, we can draw a resonance structure, and so this negative-one formal charge is not localized to this oxygen; it's de-localized. And so, because we can spread out some of that negative charge, that increases the stability of the anion here, so this is relatively stable, so increased stability, due to de-localization.

So, the fact that we can draw an extra resonance structure, means that the anion has been stabilized. And so, this is called, "pushing electrons," so we're moving electrons around, and it's extremely important to feel comfortable with moving electrons around, and being able to follow them.

So, the only way to get good at this is to do a lot of practice problems, so please do that; do lots of practice problems in your textbook. If we compare that to the ethoxide anion, so over here, if we try to do the same thing, if we try to take a lone pair of electrons on this oxygen, and move it into here, we can't do that, because this carbon right here, already has four bonds; so it's already bonded to two hydrogens, and then we have this bond, and this bond.

And so, moving those electrons in, trying to de-localize those electrons, would give us five bonds to carbon, and so we can't do that; we can't draw a resonance structure for the ethoxide anion. So those electrons are localized to this oxygen, and so this oxygen has a full, negative-one formal charge, and since we can't spread out that negative charge, or it's going to destabilize this anion.

So this is not as stable, so decreased stability, compared to the anion on the left, because we can't draw a resonance structure.

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If we think about the conjugate acids to these bases, so the conjugate acid to the acetate anion would be, of course, acetic acid. So we go ahead, and draw in acetic acid, like that. The conjugate acid to the ethoxide anion would, of course, be ethanol.

So we go ahead, and draw in ethanol. And we think about which one of those is more acidic. We know that acetic acid is more acidic; it's more likely to donate a proton, because the conjugate base is more stable, because, you could think about resonance, or de-localization of electrons. If you're looking at ethanol, ethanol's not as likely to donate its proton, because the conjugate base, the ethoxide anion is not as stable, because you can't draw any resonance structures for it. The negative charge is not able to be de-localized; it's localized to that oxygen.

Resonance - Wikipedia

This is a good example of how the word is used. The word in the example sentence does not match the entry word.

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The sentence contains offensive content. Cancel Submit. Your feedback will be reviewed. Describing qualities of sound. You can also find related words, phrases, and synonyms in the topics: Sounds made by objects, movement or impact. This poem has many resonances for me.

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Remembering, reminding and reminders. Examples of resonance. Simple analytical wave field amplitudes are used and uncorrelated resonances are assumed. From Cambridge English Corpus. General bifurcations from periodic solutions with spatiotemporal symmetry, including mode interactions and resonances, in preparation.

  1. Resonance - Chemistry LibreTexts.
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  4. These examples are from the Cambridge English Corpus and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. The two frequencies 2. The first suggestion concerns the overlappings of the resonances. Above each of these resonances, in the cold-plasma limit, there is a narrow stop band in the relevant mode.

    We shall call these values of trapped oscillation resonances. A disadvantage is the large absorption near these resonances. Our perspective is that philanthropy has many excellent soloists, but is far from forming a choir. Coming together at conferences is important for identifying choir members and perhaps choosing a songbook.

    However, to achieve harmony, a choir needs to practice. With over 40 alumni, we are witnessing the philanthropic harmony we envisioned. For example, Ceres Trust and the Latino Community Foundation no longer request budgets as part of their grant decision-making processes, and Metta Fund reduced its application process to increase its net grants.

    Now, we are looking to intensify and enrich values aligned philanthropic practices to the levels necessary to bring about a Just Transition in philanthropy.