What elements are involved in the chemical equation of photosynthesis?

Photosynthesis is a sequence of chemical reactions which brings out glucose. Glucose is a compound which the plant utilizes as food. By this, plants use the light coming from the Sun to create their own food. Moreover, the radiant energy coming from the Sun is thereafter changed into chemical energy in the glucose molecules. Furthermore, photosynthesis includes three elements. These elements are  oxygen, hydrogen, and carbon. Additionally, the products of photosynthesis are glucose and oxygen.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.