Irene Curie and Frederic Joliott bombarded aluminum-27 with an ionized helium-4 cation(an alpha particle) yielding a neutron and an isotope. One of the end products was the antimatter of the electron. What is the name of the antimatter of the electron?

A. Position
B. Negitron
C. Proton
D. Nucleus
E. Antielectron

56 moles of   lieter in chemistry

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.