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Amount of energy necessary to break a covalent chemical bond. As the binding energies of most chemical bonds are rather high (300 - 900 kJ/mol), high temperatures are necessary for the thermal cleavage of covalent bonds. Because of the high energies of the charged particels (ions and electrons) in a plasma, chemical bonds are easily cleaved in a plasma, resulting in the generation of highly reactive radicals and cations.
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