The element P has an atomic number of 15 and an atomic mass of 31. Which statement has the correct number of protons, electrons, and neutrons?

Atomic number of 15

Explanation:

15 electrons, 15 protons, and 16 neutrons

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.