Question

What energy is required to break the bonds?

Answer 1

1. Formation of bond between atoms /ions to give a chemical compound is known as chemical bonding.
2. The attractive force which holds various constituents(atoms, ions, etc ) together in different chemical species is known as a chemical bond.
3. The amount of energy required to break one mole of bonds of a particular type between two atoms in a gaseous state is known as bond energy or bond dissociation energy.
4. For example: The $\mathrm{H}-\mathrm{H}$ bond enthalpy in Hydrogen molecule is $435.8KJmo{l}^{-1}$.
   ${\mathrm{H}}_2\left(\mathrm{g}\right)\to \mathrm{H}\left(\mathrm{g}\right)+\mathrm{H}\left(\mathrm{g}\right)$
5. The larger the bond dissociation enthalpy, stronger will be the bond in a molecule.