The opposite is true if we want to make new bonds. Energy is released when new chemical bonds are formed, so bond making is an exothermic process. Breaking or making the same chemical bond will ...

Energy in = 436 + 243 = 679 kJ/mol (this is the energy absorbed when the bonds of the reactants break). Energy out = 2 × 432 = 864 kJ/mol (this is the energy released when the bonds of the ...

This attraction pulls the atoms together and the electrons are shared by both atoms. The atoms bond because there is a strong enough attraction in both directions and room for the electrons in the ...

and a small difference indicating a non-polar covalent bond (e.g., C-C bond). Electronegativity is crucial for explaining various aspects, ranging from the energy of chemical bonds to the ...