Potassium(k) atomic number 19 will most likely react with which of these following elements A sodium (Na) because it is the same Column.

B calcium (Ca because it is in the same row

C chlorine (Ca) because it is a nonmetal

D argon (Ar) because it is a noble gas

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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.