You are watching: Why are ionic bonds stronger than covalent
I simply completed AP chemistry in high school, and also in chemistry the is taught the ionic bonds space strongest. However, my AP bio friends informed me the in biology, covalent bonds room strongest. Deserve to someone describe why the two classes teach this differently?
Covalent bonding is leading in organic chemistry, yet ionic bonds normally have higher dissociation energies. I'm not sure why your friends have been led to believe that covalent bonds room stronger, together that's generally not true. Certainly an ext common in biology, but being more common clear doesn't mean that they're stronger.
Interestingly, the phenomena which cause covalent and also ionic binding to type are not mutually exclusive, therefore actual chemical bonds have their strength from both pressures simultaneously. Once we call something a covalent bond, it means that covalence is the primary reason because that the bonding, no that the bond has no ionic character.
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As a chemist i am going to say the means this is taught in biological is type of right and also the way it is teach in chemistry is confusing. Ionic bonds are stronger. The takes an ext energy to traction the 2 atoms apart come infinity 보다 it go in a covalent bond. But, the is an energy measured in a vacuum. In the visibility of solvent, such as water, this transforms drastically. This is because the two atoms in an ionic bond (as various other commentators mentioned, over there is no such point as a completely ionic or covalent bond, that is just what we call the extremes of different ends of a continuum) as soon as separated make ions. These ions room massively stabalized by the water molecules through non-covalent interactions. What this method in physical terms is that when you break a bond, you no only have to look in ~ the stability of the bond, but additionally the security of the products. As soon as the commodities are really stable, over there is a smaller power difference between the the bond and the atoms. So, that is really difficult to rest a NaCl bond in a vaccuum. That is an extremely easy to carry out it in water. So in organic contexts, constantly in water, ionic binding are more suggestions than bonds-a convenient method of relenten ion pairs, and are therefore much lot weaker than a covalent bond the doesn't dissociate in the very same way. But in a vacuum, the ionic shortcut is much harder to break than a basic covalent interaction.