Which of the following types exhibits 100 % atom economy?

Step-by-step solution

Atom economy is the measure of the proportion of reactant atoms that become part of the desired product in a chemical reaction. Atom economy = Molecular mass of desired product Molecular mass of all reactants 100 In an addition reaction, two or more reactants combine to form a single product. Since no by-products are formed, all the atoms of the reactants are incorporated into the product. Thus, addition reactions exhibit 100 % atom economy. In substitution, elimination, and dehydrogenation reactions, by-products a