You are watching: Are ionic bonds stronger than covalent bonds
I simply completed AP chemistry in high school, and also in chemistry it is taught that ionic bonds are strongest. However, my AP bio friends educated me that in biology, covalent bonds space strongest. Deserve to someone describe why the 2 classes teach this differently?
Covalent bonding is leading in essential chemistry, however ionic bonds usually have higher dissociation energies. I'm not certain why her friends have actually been led to think that covalent bonds are stronger, as that's usually not true. Certainly much more common in biology, however being much more common obviously doesn't average that they're stronger.
Interestingly, the phenomena which reason covalent and also ionic bond to kind are no mutually exclusive, therefore actual chemical bonds have their stamin from both forces simultaneously. As soon as we speak to something a covalent bond, it way that covalence is the primary reason because that the bonding, not that the bond has no ionic character.
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As a chemist ns am going come say the means this is taught in biological is kind of right and the way it is teach in chemistry is confusing. Ionic bonds space stronger. That takes more energy to pull the 2 atoms apart come infinity 보다 it go in a covalent bond. But, the is an energy measured in a vacuum. In the presence of solvent, such as water, this changes drastically. This is due to the fact that the two atoms in an ionic link (as other commentators mentioned, there is no such point as a completely ionic or covalent bond, that is just what we contact the extremes of different ends the a continuum) as soon as separated make ions. This ions are massively stabalized through the water molecules through non-covalent interactions. What this way in physical terms is that when you break a bond, you not only have to look in ~ the stability of the bond, but additionally the stability of the products. Once the products are really stable, there is a smaller power difference in between the the bond and the atoms. So, that is really hard to rest a NaCl bond in a vaccuum. That is an extremely easy to perform it in water. Therefore in organic contexts, always in water, ionic binding are an ext suggestions 보다 bonds-a convenient way of relenten ion pairs, and also are for this reason much lot weaker than a covalent bond that doesn't dissociate in the very same way. However in a vacuum, the ionic link is lot harder to break than a simple covalent interaction.