If the chemical reaction AB + CD → AD + BC releases heat, what is true of the stored bond energy of the reactants and products? A. The bond energy of the reactants is higher than the bond energy of the products. B. The bond energy of the reactants is lower than the bond energy of the products. C. The bond energy of the reactants is the same as the bond energy of the products. D. The bonds do not have energy; the atoms release heat.

the nsw _3

Explanation:

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.