Factors affecting bond enthalpy
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For covalent bonds, bond energies and bond lengths depend on many factors: electron afinities, sizes of atoms involved in the bond, differences in their electronegativity, and the overall structure of the molecule. There is a general trend in that the shorter the bond length, the higher the bond energy.
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What is bond dissociation enthalpy ?
The amount of energy required to break a chemical bond is called as Bond dissociation enthalpy . Bond energy is considered as exothermic processes as heat is released while breaking of bonds into atoms. It can also be explained as the standard change in enthalpy when a bond is cleaved via the homolytic fission.
Factors that affect the bond dissociation enthalpy are
- size of atoms
- bond length
- bond multiplicity
- *lElectronegativity difference
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