How bond energies and bond lengths of the molecule helps us in predicting their chemical properties? Explain with example.
How bond energies and bond lengths of the molecule helps us in predicting their chemical properties? Explain with example.
1. Bond length: Bond length or bond distance is the equilibrium distance between the nuclei of two atoms which form a covalent bond.
2. Bond energy : Bond energy or bond dissociation energy is the energy needed to break a covalent bond between two atoms of a diatomic covalent compound in its gaseous state.
Factors Affecting the Bond Energy
The chemical bond’s strength is directly proportional to the amount of energy needed to break it. Thus, bond energy is given as follows:
Directly proportional to the bond order; that is, multiple bonds contain high bond energies.
Inversely proportional to the bond length, that is, longer bonds contain lower bond energies, and
Inversely proportional to the atoms’ atomic radii, participating in the bond (because the atomic radius is directly proportional to bond length).
Bond Energy α Strength
α Bond order α 1BondLength α 1reactivityExample: The reactivity of the H−O−O−H>O=O(O2)This is because of the fact that hydrogen perioxide has a bond order of one and dioxygen has a bond order of two.
1. Bond length: Bond length or bond distance is the equilibrium distance between the nuclei of two atoms which form a covalent bond.
2. Bond energy : Bond energy or bond dissociation energy is the energy needed to break a covalent bond between two atoms of a diatomic covalent compound in its gaseous state.
Factors Affecting the Bond Energy
The chemical bond’s strength is directly proportional to the amount of energy needed to break it. Thus, bond energy is given as follows:
Directly proportional to the bond order; that is, multiple bonds contain high bond energies.
Inversely proportional to the bond length, that is, longer bonds contain lower bond energies, and
Inversely proportional to the atoms’ atomic radii, participating in the bond (because the atomic radius is directly proportional to bond length).
Bond Energy α Strength
