Giselle is pairing ions to create stable binary ionic compounds. she knows that the sum of charges of the two ions must be zero in order for the compound to be stable. which ion could be paired with a potassium ion, k +, to form a stable binary compound? beryllium, be 2+ fluorine, f − lithium, li + oxygen, o 2−

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.