Description 1. React isobutane with Br2 /light [which is selective and less reactive than chlorine and produces the most stable product]. a. Show the concerted reaction leading to the most stable mono-substituted product. b. Show the 3-step mechanism that leads to this product. 2. React isobutane with Cl2 /light, [which is more reactive than bromine and less selective and produces the most probable product] a. Show the concerted reaction leading to the most probable mono-substituted product. b. Show the 3-step mechanism that leads to that product