Bond energy

• The?bond energy?is the energy required to?break?one mole of a particular covalent bond in the gaseous states
  • Bond energy has units of kJ mol-1

   

• The?larger?the bond energy, the?stronger?the covalent bond is

Bond length

• The?bond length?is?internuclear distance of two covalently bonded atoms
  • It is the distance from the nucleus of one atom to another atom which forms the covalent bond

   

• The?greater?the forces of attraction between electrons and nuclei, the more the atoms are pulled closer to each other
• This?decreases?the?bond?length?of a molecule and?increases?the?strength?of the covalent bond
• Triple bonds?are the?shortest?and?strongest?covalent bonds due to the large electron density between the nuclei of the two atoms
• This increase the forces of attraction between the electrons and nuclei of the atoms
• As a result of this, the atoms are pulled closer together causing a shorter bond length
• The increased forces of attraction also means that the covalent bond is?stronger

Triple bonds are the shortest covalent bonds and therefore the strongest ones