more deatails:
http://en.wikipedia.org/wiki/Bond_energy
Bond energy is the amount of energy needed to break the compound to form separate molecules.
If KCl is the compound for breaking the compound and to get K and Cl separately nee some energy. That energy shows the strength of compound. If bond energy is high the compound will have high strength.
There require some amount of energy to form a bond between two different elements to form a compound. For example Sodium and Chlorine. To form Sodium chloride that is salt, need some amount of energy.
Bond energy is the energy required to split one mole of molecule into its component atoms. The stronger bond has high bond energy required. The SI unit of bond energy is Kilojoules per mole of bonds.
Definition of
bond energy 1) The amount of energy
necessary to break one mole
of bonds of a given kind (in
gas phase). The amount of
energy necessary to break
one mole of bonds in a substance, dissociating the
sustance in the gaseous state
into atoms of its elements in
the gaseous state.
