So we essentially want to break this covalent bond and form two separate H molecules or h atoms. So that means since we go from a lower energy to a higher energy, we have to input energy to go from this guy to this guy. So we input energy to break the bond to form two individual H molecules. And this is known as an endothermic reaction. So once again, endothermic reaction is a reaction in which the energy of product is higher than the end of reactants and energy is used up or inputted into the system for that reaction to take place. So once again, anytime we have an endothermic reaction going this way, going the forward direction, we have an endothermic reaction going in the backward or reverse direction.