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Bond strength is described as the energy required to break the bond. As the bond length gets longer, the attraction the two bonding atoms impose on the bonding electrons becomes weaker and lowers the energy needed to break the bond. Thus, longer bonds are easier to break than shorter bonds are.
Strong acids are defined as those that can dissociate by donating an H+ and therefore a long bond which is farther apart and weaker (easier to break) allows for this while a shorter bond doesn't considering it is stronger therefore harder to break.
Abigail Menchaca_4H wrote:Why are long bonds weaker than short bonds?
short bonds are stronger than long bonds as the bond itself is shorter due to a stronger attraction between the two atoms of the molecule
Long bonds are weaker than short bonds because they have less attraction to each other in contrast with short bonds. The atoms are either larger in size or the electrons are repelling each other away making it easy to break the bonds.
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