Respuesta :
In the below diagram of water, H refers to the hydrogen atom and O is the oxygen atom.
For the formation of one water molecule, two hydrogen atoms combine or react with one oxygen atom. They make covalent bonds with each other means mutual sharing of electrons. In the formation of water molecules, the energy is released which tells us that exothermic reaction taking place. In the diagram we can see that first the line is higher but when the reaction is completed the line comes lower which shows that energy is released.
Learn more: https://brainly.com/question/18296054
