You are watching: Is covalent bond stronger than ionic
I just completed AP chemistry in high school, and also in chemistry that is taught the ionic bonds space strongest. However, mine AP bio friends educated me that in biology, covalent bonds are strongest. Can someone define why the 2 classes teach this differently?
Covalent bonding is dominant in organic chemistry, but ionic bonds generally have greater dissociation energies. I'm not sure why her friends have been led to think that covalent bonds room stronger, together that's generally not true. Certainly an ext common in biology, yet being more common clearly doesn't typical that they're stronger.
Interestingly, the phenomena which reason covalent and ionic bonds to type are no mutually exclusive, therefore actual chemistry bonds have their stamin from both forces simultaneously. When we speak to something a covalent bond, it method that covalence is the major reason for the bonding, no 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 biology is sort of right and the means it is teach in chemistry is confusing. Ionic bonds space stronger. It takes more energy to traction the two atoms apart to infinity than it walk in a covalent bond. But, the is an energy measured in a vacuum. In the presence of solvent, such together water, this alters drastically. This is due to the fact that the two atoms in an ionic bond (as various other commentators mentioned, there is no such point as a purely ionic or covalent bond, the is simply what we contact the extremes of different ends of a continuum) as soon as separated do ions. These ions are massively stabalized through the water molecules with non-covalent interactions. What this method in physical terms is that once you rest a bond, you not only need to look at the stability of the bond, but also the stability of the products. As soon as the assets are very stable, there is a smaller power difference between the the bond and also the atoms. So, the is really tough to rest a NaCl shortcut in a vaccuum. It is an extremely easy to perform it in water. Therefore in biological contexts, always in water, ionic binding are much more suggestions than bonds-a convenient method of describing ion pairs, and also are hence much much weaker 보다 a covalent bond that doesn't dissociate in the exact same way. Yet in a vacuum, the ionic link is lot harder come break 보다 a an easy covalent interaction.